I have and '84 Chevy 3/4 ton with 350 and manual transmission. Living in California poses some issues with our draconian smog laws as I would like to replace the stock engine with a GM Performance crate engine. I don't want to get overly radical and am considering either the 290 HP or the 330 HP models. I can put all the smog equipment on it so it will pass the visual smog inspection but my concern is after all the $$$'s and effort, will it pass the sniffer test? Has anyone done this? Know of someone who has done this? Any and all input is appreciated.