It would be just the cams, it's not a radical grind that you would need to change out the stock equipment. It works with the stock followers and the rest of the stock valve train.
No tuning is nesscisary to get them to work with the stock ECU. Since the cams move the power band a little higher in the RPMs, I would reconmend a chip for the non-svt ECU cars and raise the limiter.
