www.earlyclassicenterprises.com has a set of sanderson headers that dump out at the firewall elimitating the problems the long tube headers causes with lowered trucks, $359 ceramic coated. This is what I'm planning on using for my project. I'm using a 72 c10 frame that has been lowered 3 1/2" in front and 4" in back. The front was lowered with 2 1/2" drop spindles and 1" lowering coils bought from CPP.