If your going to run a single pipe don't buy headers. Simply use the 292 exhaust manifold which uses the 'larger' 2" pipe.
Run it far back & use a 'straight through' muffler. It will be quiet/use less fuel and won't cost much to build/maintain etc.
Headers only assist in the higher (4,000+) range and not needed for normal driving etc.
Save your money & Good luck.
