header back duals...

on my 72 valiant i have a 340 with stock manifolds, was thinking about headers but they seem to be a pain in the ___,-from what i have read on here. Could i buy the jegs brand dual exhaust kit and make it fit stock manifolds, because they recommend hooker super comp and i dont want to put headers in so, could it be adapted to the manifolds if so, please tell me how, and post pics if u have done it with a similar situation