Yea, I thought about this, but given that I was starting to feel a bit woozy from the carbon monoxide I thought it better to fix it quickly, and put off the upgrade until later. I was actually a little upset to find that it was the manifold, and not one of the pipes that had gone bad, as this would have been the perfect excuse for a free-flow cat and muffler.

1992 Isuzu Rodeo, newly rebuilt 3.1L v6 and rear diff; clear corners, bumper and tails; Aiwa MP3 head unit; Infinity Perfect 10.1 sub; Polk seperates; Sony cross and amps.
Next projects -- New paint, tint, billet grill, nerf bars.