I appreciate the comments Jebb. That tank is a bit "suspect". It needs a heavy cleaning and I will either JB weld a new filler neck on it or my buddy might weld one on. His dad said that it can be done. Just "fill the tank with water then weld it". Sounds like it would work to me...then again, I've never welded before.
BTW, the front of the front crossmember(?) will have some kind of tabs or eyelets welded on for the stock Blazer tank straps. I think its coming along pretty well! Later, J