/6 single or dual exhaust?

The 73 has an oversized exhaust manifold running through a 2¼ inch pipe and a generic Turbo muffler. It sounds okay. Actually it sounds kind of wicked when idling slowly in gear and is nearly silent at highway speeds.

Gas mileage is really crappy right now, 16 mpg highway. The carb was jetted with a 62, should have been a 52. Will report on thread later (see Resurrected Junk).