9 1/4 brakes on an 8 3/4 housing

Will 9 1/4 rear end brakes from an 88 D100 work on an 8 3/4 truck housing? I know I will probably have to drill the bottom hole in the backing plates, but is the offset on the 9 1/4 backing plates going to work with the 8 3/4 axles? I have the correct 8 3/4 axles for the XL bolt pattern on the brakes....5x5 or 5x5.5 (?), which is the same as the front rotors on the truck. The 9 1/4 in the 88 D100 is a one legger, and has Bonneville gears in it (2.45's). I want to put the 8 3/4 truck rear end in it with 3.55 or 3.91 Sure Grip so it has a little more ooomph to it. Thanks.