37 I have a 1938 1/2 ton panel delivery which has the same width dimensions I think as your pu. The rearend I used was from a 1988 S10 Blazer and has 3.73 gears and a posi. If you look on the site belwo there are some pictures. In Canada that setup at the wrecking yard was about $350. hub to hub. The only down side to this setup maybe the diameter of the brake drums. Depending on your setup.


John....38 Chevrolet Panel Delivery
http://community.webshots.com/user/tobytailford