The shift arm can be removed and reinstalled facing up. I did it on my fmx to attach to an old mustang shifter. The shift points were off slightly when shifted down to the 1-2 range but seems to line up ok in the p-r-n-d range. It might work with your aftermarket setup. It is a dirty PITA job with the tranny in the truck. Replace the seals when you're in there.