I need a new PCM for my '01 Z28 m6. GMPartsdirect has the 0411 for vette cheaper than the 4896 that's specific to my car. Which is better please??? I don't mind the price difference but I want the best, car is stock and will get serious bolt ons in the future. Tuned regularly with HP. I thought all LS1B pcms are the same but I hear the 411 talked about often...?