High-mileage 915 J heads... can they be fixed?

cudamark said

With the stock exhaust manifolds, you probably don't even have to plug the smog holes. They should cover them.

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I do have long-tube headers I'm going to install, or actually was in the process of installing when I broke an exhaust stud lol.

I actually think I'm going to go a different way getting replacement heads, a member on here has a set of rebuilt 596 heads I should be able to get for a slightly lower price than the RockAuto remans but with stainless exhaust valves. I also just prefer to do business with a fellow FABO member as opposed to a big supplier when possible.