you need to know your wheel track width. front and rear. then go to a site like crankshaft coalition and see what else is close. according to their website info the measurements are 125.25, 62.6, 52.1 -- 1947-'54 Chevy AD 3/4 ton. try this site for the tech page of specs. peruse through till you find something that will work and go from there.
http://www.crankshaftcoalition.com/w...l_measurements