Rear end installed. Again I had Currie make it special. 3.7 ratio, with a detroit trutrac. Since GMC's for the most part have leaf springs the hangers were added by them. Everything fit perfectly. I purchased the leaf springs through General Spring locally here in Kansas City. They are actually for 3/4 ton trucks from 67-72. They are rated for 2725lbs. The original springs were rated at 1500lbs. Here is a link to the springs.
https://www.generalspringkc.com/product_p/22-409.htm
I used shakles from a 3/4 ton truck slightly modified. I used 5/8 u bolts and u bolt pads from RuffStuff. The pads are sold for 3 inch axles for Ford Broncos. All came together very well.
The fuel tank is aluminum from Brothers