now that figured out the year of my engine ( it's an 85 307) in a 1980 olds body I need to hook up the vacuum lines. it has an a5 intake with a noncomputerized carb and no computer on the engine at all. I was thinking of going to the wrecking yard and buying a olds 350 for 150 bucks and rebuilding it and putting it in but that will be down the road later this fall. also, I am not sure of the differential ratio I haven't crawled underneath with a wire brush yet but for now it is complete and I live out in the country so it not likely to see much stop and go traffic.