W2W builds awesome motors for max effort. However they are more expensive than most however they take a hell of a beating. TSP, EPP, Speed Inc, Thunder Racing, and TTP are all great vendors. The first three would be my top three choices because I have seen a lot of feedback on them. Talk to each vendor and see what you get for you hard earned cash. Not trying to take anything away from you Smitty or AZPS. Im sure you guys can build a great motor since your pumping out all these Procharged GTOs left and right with great success.