My car has a 70s 360 in it. It had crappy headers on it when I bought it. I took them off. I bought some 73 340 A body exhaust manifolds from a friend and I ordered a stock exhaust from Waldron. I got the head pipes for 73 duster to match the manifolds and the rest for a 69 barracuda to match the car. It worked out well.
The later 73 manifolds were a lot cheaper than the 69 340 manifolds. Mine is a daily driver, so I didn’t really care about the performance difference.
Most folks say b body manifolds won’t work on the driver side, but I have never tried.
