OK. Screw that. They say the cone type(stock) posi unit that came in Ponts are not rebuildable and after 35 years they are mostly all wore out, I would think. So I'm gonna take everyone best advise and save up for the powertrax unit. Around $400 I think. I saw one installed on TV the other day. Took about an hour and looked like a piece of cake. No real adjustments have to be made.