I just got an 89 GMC 1 ton with a 454 TBI. It could use about 50 to 80 more HP. I want to keep it all smog legal. I know about the chips, CAT backs, smog legal headers and good flowing air cleaners. I want MORE power. Is this even possible with a smogged, computer controled 89? Any feedback, links or laughs appreciated. I'll have to post a few pictures of this "Disco 4x4" before I de-disco it! It was done in 1990, so that should be a hint. I'll have lots of stuff to sell and trade. Unfortunatly, I doubt you guys would want any of it. Eric M.