My uncle has done 3 of the 67'-72' truck's. And is starting the 4th on Monday. We have taken measurements on the 73'-79' truck's. I have a 73' that we will be doing a 03' and up CV crossmember swap. I'm more into the 48'-56' truck's. I hang out at his shop a good bit. You ever have too many plans, with too many car's and not enough money? That's me.