could be i drive that truck everywhere. going to finish the rest of the cab paint job after the rains slow down this season. ran into a little snag with the tranny rebuild. chipped gear. i might still use it anyway. i know just as soon as i get it in the truck, I'll find a cheap r150f or a r151f counter gear. so I've slowed on this until i finish installing the Aussie in my 4.56 90's rear axle. what did you decide to do with your timing chain?