In regard to the S10 chassis I believe the 47-53 frames are the same and I put an S10 under my 49. You either need to purchase or fabricate some mounts for the cab and bed, and do some triming at the bottom of the radiator cradle. I also added a 350SB and 350 tranny so I needed to trim the inner fender on the drivers side to clear the header. Drives nice with PS and PB.