Care to speculate my 340?

Doug's headers (d453) or TTi is the way to go.

Duster, I'm finding it hard to resist buying a set of headers because I know they will have a big impact on the overall characteristics of the build. lol

Thanks for the recommendations,the fact is I need to buy an exhaust system anyway and was going to pair it with the Hp manifolds for that stock look under the hood. Now I think I'm at a tipping point.
Maybe I'll just go headers.