Trust me on this, take it to a shop
I did one set (trying to save money) mine was the kind you have to cut out. If you have the bolt in kind, its not as bad, buts its better to let a shop that has done this. I do mean a shop that has done this. If they dont have the proper press to press the bushings in and out, then they will have to take the beams to another shop.
I think it took me all day to cut them out, then I took them to the shop and paid them to change the bushings, then I spent almost another day installing them. You do know you have to jack the truck up, remove the tires, so that takes jacks and blocking
The bushings and labor to press them in, cost like $950
The same shop would have charged me $1500 to do everything, labor and materials
So I worked, like15 hrs myself, then I hired a guy to help me and alot of fussing and cussing
Its just not worth it and I save a buck whenever I can
Did I say take it to a shop
what kind do you have? bolt in or press in