difference between case ck backhoe attachments

hello everyone. been a while since i have posted anything. my old backhoe has been working great since the engine rebuild done lots of work with her.
the backhoe was really worn and abused by the p/o and shows evidence of weld repairs all over it as well as almost every pivot was ovaled and badly worn. almost every cyl leaking ect.
found a entire backhoe attachment locally that appears to be in really good shape. no weld repairs at all. all pins and bushings look in tact and original. or not cobbled together with whatever shaft or bolt kinda fit the hole anyway lol cyls all appear dry and in good shape except one stab cyl that the gland was half loose. ( orig hoe has one good stab so i can swap it over ). main valve looks fairly clean and not terribly oily. all in all the new one is in muuuuuuch better shape so i’m going to swap it and see soon. currently have both hoes side by side in the middle of the yard. blocked and standing up right.
noticed it appears the new to me hoe has a slightly shorter dipper and the big support plate bracket at the boom end of the dipper is smaller and looks slightly diff than the original.
i believe both to be the same model. both the older single boom cyl type. same controls. two “ wobble” sticks and two stab levers. the gussets on the stab cyl mounts look bigger and run further up the hoe frame on the new to me hoe as well. orig ones have been busted clean off it appears and repaired several times by the amount of weld repairs on them lol
my question is was the 580ck hoes available with different stick lengths or would this new to me hoe be off a smaller model tractor like a 480?? seller only knew it was off a ck. looks to mount identical and is very similar looking. seller claimed it to be early 80s ck. i didn’t think the ck with i believe a mod 33 hoe were even available in the 80s. appears the boom is almost the same length but the dipper is maybe 10-12 inches shorter. the dipper cyl mount looks much longer and larger than the one off the 580. bucket cyl on the new hoe is slightly smaller diameter. i will upload some pictures for better identification. any input would be appreciated to help me identify if this is a 580 with a shorter digging depth or if it’s a smaller unit. i don’t dig much more than fire pits and drainage ditches so i’m fine with the shorter reach. more just curiosity wondering why it’s smaller. thanks in advance.

Look for a model number on thr RH side of the backhoe control tower.
Rh side is when you are facing the backhoe.
If you find it andgo here and you will see all the different backhoes made by Case.
https://www.mycnhistore.com/us/en/c...backhoes/backhoe/cn/NA_E_S_49_LOA_212_BACKHOE

well i was able to get the new hoe attached and connected to the old tractor. no sign of a number plate for identification tho. it’s definitely slightly smaller than the original hoe. dipper cyl is about 4 inches longer and maybe half inch bigger diameter. the boom cyl is about an inch or two longer and also slightly bigger diameter than the new one. i used the original controller tower and linkages but may need to trim about half an inch from a few linkages to get them to adjust far enough to center the wobble sticks.
the new hoe is hands down tighter and better shape than the old one. it’s just slightly smaller. appears to be a small leak from the end of the control valve near where the one main hose with the quick connector is. on the left side when looking at the valve from the seat. un sure if it’s from between the sections or if it’s coming from the top of the spool. have to investigate more. i will try and get pictures and post them.
thinking if i take the original hoe apart i might be able to use the older hoe frame/ mounting body and re purpose it to make a different attachment for the old girl. maybe a removable back blade or log splitter or something. seems like i could weld and modify something to the old mount frame and repurpose it. most of the parts are too far gone for repair. swing tower is cracked and every pivot is wollared out. boom and dipper have both been broken and repaired numerous times so the only parts worth keeping are the valve , rams, bucket (and thumb) and the main body where it attaches to the tractor. not sure what i can make with the mount section but seems like it could be re used to make some sort of attachment. and with the hydraulic lines that feed the hoe it seems i could have hydro to run said attachment

couple pics of the new to me hoe attached to the machine valve pic is where the leak is that i need to investigate further appears to be from between the sections where the main hose and the first spool join may be running down from spool tho that outrigger spool was stuck and with oil and a hammer i was able to get it moving but it may be the leak source?

couple pics of the original hoe for comparison. notice the difference in the stabilizer mount gussets and the diff in the top end of the dipper arm. similar but definitely different. believe both are mod 33 or ??? 36?