trike84.......If memory is correct, the actual difference in the width of banjo housings is 5/16". I believe the early is 3 1/2" wide, and the '35-'48 are 3 13/16". Can't answer your specific question without thinking a bit. SEEMS like you'll run into brake drum to backing plate difference of 5/32" on each side. Maybe 5/32" spacers on each side to space backing plates outboard........?
Curious as to why you're going to use the early center section? There's probably going to be more involved, the more you think about it. DD