I started to work on my newly purchased 1995 4x4.the alt was siezed from sitting and so was the air pump,so the air pump and all related garbage will be going in the scrap bin.and the alt will be here tomorrow from parts for trucks,much cheaper then in town.I also got the axle code from the door 18 3:08.not exactly ideal.and the 95 I'm driving now has 3:55's in it.I think I'll be pulling the cover on the 3:55's and if it all looks good I will swap the front and rear ends into the truck I'm going to keep.I only plan on running 31's on it but the little extra gear will help make up for the 300.