ack... popup hell!!! As far as teh O2 sensor, I was under the impression that the earlier K-jetronic injection did not have an O2 sensor, that is why I would think this can work. I would think the concern about the cats is that running rich kills the cats after a while.

PS: I heard about the exhaust-flamethrower here:
http://isuisse.ifrance.com/emmaf/anarcook/aeflame.htm