340 HP's vs headers

I have been following this old thread you revived. I just bought a pair of early HP 340 manifolds. I would also like to liven up my 318 in my Swinger. I have a LD4B and a assortment of 600-650 cfm carbs. I would like to follow up with TTI exhaust or at least get the front pipes from them and finish out the exhaust. This combo seems to help the teen's performance. I may put in a little cam while I'm at it.
I think with a stroker it would be best with headers of some kind. The engine is just a big air pump and a stroker uses quite a volume of it. It has to get out as fast as it came in. Keep us posted on what you do and the outcome. tmm