specs, 2wd mainshaft don't work, 4 7/8" longer than 4wd. first and fourth different ratios in 2wd-4wd. will need gears cluster to use the 2wd cluster. I am not shitting you. you are my favorite turd. I would take pics of the differences, but i am not sure if I have to link pics here, or if the site supports them. and if I have to link them, that is to much work.