Straight axles and rack and pinion steering don't get along very well, Dennis. If you bolt the R&P to the axel, You're gonna need some kind of monkey motion, in the steering shaft, to allow for the axel to move up and down. If you bolt the rack to the frame, bumpsteer will become your worst enemy. Speedway Motors, has a write-up in one of their catalogs, about why this isn't a good idea.(I think it's their hot rod catalog.)Not saying it can't be done.