there are higher and lower R&P sets out there for it. look for any salvage yard that deals in isuzu npr/gmc w4 trucks and you can find a bunch of different ratios depending on what the truck was set up for.


Shane
1959 Apache 3100 Fleetside
1959 Apache 3200 NAPCO
1957 Chevy 5700 Low Cab Forward
1959 GMC F370 LCF
Another 1959 Apache 3100 Fleetside
1959 Chevy 5700 LCF
1946 Chevy 1/2 ton
1958 GMC 600
1974 Elcamino SS