[olddog]

I have heard of problems with headers putting the O2 sensor down in the collector. It's too far from the head, and causes the computor to stay in open loop mode. Any ways that is what I read.

If you really want to make it go, put a set of 32 valve DOHC heads on it. I got a set laying around if your interested. Complete with cams, chain guides, got the whole engine.