I didn't want to make a set of custom headers so I tried to find some stock manifolds that would fit.
Ram horn exhaust, no fit. Control arm mounts and engine mounts in the way. I needed rear exit manifolds.
Enter 1979 Chevy 350 truck left side and a 1956 Chevy 265 right side .Had to port match the 265 exhaust out to 350 size, lots of metal!
79 head pipe is ball and cup design 265 is flat gasket so I cut the ball off another 350 exhaust and had it machined flat. Now with a copper gasket under the flat and longer studs I have ball and cup head pipes on both sides.
I am also using copper exhaust gasket on block to manifold.
Flowmaster 40 series mufflers with full length pipes, chrome oval tips.
I also plan on smoothing casting flash off and smoothing the whole manifold.