I'm using an 8 1/4 out of a 92 and I'll swap axles out of 87-90 for the 5 lugs. Fronts are already 5 lug. I need to find a car 727 and swap everything over from this rv trans. Should be a blast. I'm recovering from major surgery so this will be a slow build for another 2 or 3 months then off to the races we go. Tubbing the back of this truck could be in the future. That would be nice.