Searched for a long time with no avail so I figured I'd break down and finally ask ha. I was curious to know if there were any differences between the 3100 stepdside and 3100 fleetside frames in the 55-59 era. Ive got a 58 fleetside 3100 frame right now that isn't in too bad of shape but Ive got a chance to get a 59 3100 stepside that has been reworked and painted chassis black. Ive got an underbed frame rail mount gas tank that was made for a fleetside so I didnt want to be stuck with a stepside frame that my tank would not mount to. Any help would be great or maybe a link to something would be even better!!Thanks ahead of time!!
