Yogi's, Inc. offers this Chassis Engineering bolt on transmission cross member. This unit uses original holes that are already in your frame. Fits Turbo 350 and other measuring 20-5/8" from engine to mount center holes on trans mount.
ES-1164 fits 40-47 Chevy GMC 1/2 ton pickups 350TH, Powerglide & Manual
ES-1165 fits 48-54 Chevy GMC 1/2 ton pickups 350TH, Powerglide & Manual
ES-1166 fits 40-47 Chevy GMC 1/2 ton pickup 700R4
ES-1167 fits 48-54 Chevy GMC 1/2 ton pickups 700R4