What Headers Needed?
Welcome from south Texas. The hp stock 340 manifolds are rather expensive. You might want to find some headers or 360 manifolds at a swap meet. Since spring is just around the corner here in the south, swap meets will be in full swing. I have a set of Hooker Competition headers that are in decent shape, but someone had them hooked to sidepipes. The sidepipe outlets have been capped. PM me and I'll try to get some pictures for you.
Bill S.