Thanks 68!
Floor pan was a Triplus, bought from GMC Pauls if I remember right. $500 shipped but worth every penny.
Im in eastern Iowa, near Iowa City. Truck is 2 hours away in northern Iowa at my FIL's shop, he tinkers with it when he can and I get up there about once a month for the weekend. Thus the slow process. Now that deer season is over, my weekends are a little more open