Restoring a 340 need advice

Also looking into getting rid of the cast manifolds. With how tight the tolerances are on the driver side with power steering and column what not. Anyone have good luck with a certain style or brand?

I would not recommend "getting rid of" or "pitching" anything off that engine. If it has real 340 manifolds, save them. They are worth a bit. If it was me, I'd run them. Can you post some pictures? On a mild build, if they are real 340 manifolds, they flow very well. Headers always rust eventually. Manifolds are forever. Plus, you only have TWO choices in that car for a good quality header that has a lot of ground clearance. TTI and Dougs. About 1000 and 650 bucks respectively. 340 manifolds will flow 400 plus HP. Keep that in mind.