been workin on a 86 cj...the frame is almost perfect...86 cj tub is a basket case with no hopes of restoring...have a chance at a 87 yj tub in great condition...I realize that the fuel tank will be a issue, but hoping to switch sending units from the yj to the cj and hopefully that will be taken care of...is there any other changes that I will need to make..re. fenders and so forth