I figured out the problem. I pulled the rear case today and counted the splines on the output of the crawler. Yep 23 of them. My case is only 21. I am pretty dang sure I ordered a 21 spline for my 88 4 runner. I emailed them and tried calling them but got no one so hopefully they can fix the situation somehow before the weekend becasue we are supposed to go wheeling.
Jake
