To put in the 5 speed and modern rear end,its up in the air and I will soon be yanking the original rear end and trans out so i can get this truck ready to cruise at highway speeds. What is my main concern is getting the rear wheel centered in the fender as it seemed to be a little forward,I have heard about reversing the springs so the center bolt will be in the right spot so the wheel will be centered. A local rod shop used to sell perches with multiple holes but they are no longer in buisness and I dont know anyone else that sells them,I thought about getting new springs with the center bolt back a little but my springs are still good. I need for someone who has put in a modern rear in a 37 to tell me what I need to do. Jeff