The PTO needs to be a SAE 6-Bolt with internal gears to match your existing SM-420. All of the other parts should bolt on as long as the frames are the same width. I'm not familiar with a 1953 Silverado 3500...what trans does it have?

Mike B smile


Mike Boteler

1956 Chevy 3100 Resto Rod
1952 Willys M38 Army Jeep
1983 Jeep CJ7 Laredo
1984 Jeep CJ7
+++++
Silver Spring, MD