Guys, as far as Callaway goes ... one of the best tuners around. I live in Connecticut, home of Callaway, so during the summer months, it is not uncommon to come across Callaway Vettes, Camaros, and project cars at local car shows. A buddy had his 87 Iroc worked on by Callaway, and the thing would get sideways! His NA Iroc was like 600hp, street legal. It was a bad ass car, and for anyone who says that Camaros can't handle/too heavy~~ the car cornered like a BMW. Respect to Callaway. You must realize that Callaway dosen't determine the extent of the work~~ Mazda's design and development teams do. I guarantee, with all of his experience, he could build a faster protege that HKS, greddy, you and me could only wet dream about. But Mazda knows they cannot charge that kinda money for a pocket rocket. They would loose money.