I am about to take my 30' tudor body off the frame will I need to weld bracing in it? It is a super solid body with no rust at all.
I wouldnt worry to much about it. I lifted mine off without braceing it and it didnt even have the floors in. Left it on a pallet jack for a few months and put it back on. Still as straight as the day it came off the frame.
You shouldn't have any problem, especially if the crossrails and some of the floor is in place. Last one I did had very little rear floor or subframe, from the cross rail behind the doors back and it was fine. I put it on saw horses and rebuilt the rear floor etc. and the doors closed well and remained in good alignment during the whole process.