FlowTech Headers
If you have power steering, be prepared to modify the tube that hits the coupler.
I smashed mine almost flat there and have to take them out and modify the tube.
Manual steering should be o.k.
They do hang a little low.
I had to ding the tubes where they hit the torsion bars, but nothing serious.
All of this is in a '69 Valiant 2 door post with a 318 auto. Stock '69 k member and motor mounts.