I don't have a V6 but I would suggest getting with the shop that is going to do your work and buy the tuner they use. Different tuners will argue all day as to which programmer is better but it will eventually come down to the person building the tune and what he is comfortble using. One other note is that if you are at any of the bigger events in the southest the Pro-Dyno guy is brings his mobile Dyno and he uses the SCT software
636rwhp/576rwtq or 852/900 RSAE corrected
"And the dynos rumbled, and God spoke 'Take thine turbos, install them upon thine car, and destroy the many ricers!'