Anyone put a BB in an R/C? The 83 318 has 301,000 on it now and is getting tired. That is my next winter project after demo derby season is over. I have a drive train out of a motor home, 440/727, and was wondering if there were any major problems that anyone encountered. I know I will have to move the trans cross member and shorten the drive shaft. Will the 8-3/4 rear stand up to the 440 or should I put in the Furd 9 out of the 79 Lincoln Continental with the disc brakes? The 8-3/4 needs a rebuild, as the wheels can be moved in/out 1/4 inch. The 9 only needs new brake parts, as it has been sitting over 3 yrs. I like the idea of having rear discs.