I've seen quite a few B's with a cooler mounted in front of the radiator. I believe that these lines can run at full pump pressure, around 300 psi I think, so keep that in mind when selecting a cooler. It's also a little tight in there running the hydraulic hose; some owners will install a used cooler off a piece of heavy equipment.
I have a CK with a completely by-passed cooler. Not sure what a rad shop would want to repair that section of the radiator. Make sure you have a new bottom rad hose if you pull your rad out., good luck.Phil