I came across some heads on Craigslist for a good buy. I know I need the manifold and gaskets and other lines/hoses. My question is, how necessary is a tune and what hand held tuner works best to load a tune. On all my other cars a tune was done to the oem computer so this is new to me. Sct seems popular. I would need a tuner then a shop to dyno tune and create file to load on the cars computer with the sct. Thanks guys.