A833 18 spline 4 speed crash box.

I was too before I retired, So from one truck driver to another, you got this, no problem. Good Luck with your new found friend at the track, your going to love how fast that slick shifted trans shifts. Just do your self a favor and spend the money for the right clutch(slipper clutch) or you will be chasing broken drive line parts, spend a little more now save a lot later.