Josh, Check your GVW Tag and let us know what it states. I'm going to guess that it is somewhere around 19,500.

Are you sure you have 10 Lugs on the Front and Rears? Those trucks usually had 10 Lugs on the Rear and 5 on the Front.

Bill


'60-'72 Chev/GMC Fan
GMC 9500 Fan
Detroit Diesel Fan