Steven,
Here's the deal with the way the original drivetrain/spring "centering" spring pin configuration goes. The torque tube has a rubber mounted pivot which is located forward of the axle tube. The spring pin fits in this forward-located pivot mount. This is why it is necessary to use the front hole of the Classicparts.com spring perches. It will place your axle in the original position, forward of center of the fender opening. If you decide to instead, reverse the springs, you will place the axle in the middle of the fender opening. Some folks prefer that look. I prefer it when folks ask me if everything on the truck is original. I tell them, "Looks like it, doesn't it?" Then I tell them that I have a T-5 overdrive transmission and a 2001 Nissan Xterra rear end in it!
Carl
