I have a 1965 3/4 ton with the drop-out style rear end. It is not a dana, and has 4.57 gears in it. I am trying to find a higher ratio ring and pinion and am not having much success. Does anyone out there know who might make a set for this type of rearend? Thanks in advance. bill
Bill: I bought a 3.08 ring and pinion, master setup kit and posi member for my '66 C-10 that has a GM 12 with 3.73 posi on eBay. The name of the company is Power Train Truck and Auto Parts, 2100 Arctic Avenue, Unit 3, Bohemia, NY 117162. There phone number is 631-589-7020. I don't know if they have a website but you should be able to contact them to see if they have what you need for your C-20. Good luck with your search. LILRD66 ('66, C-10) BCKNBLK ('66, K-10)
