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5 V8 1983 - 1984 Pontiac Parisienne 350/5
7 V8 1974 GMC C25/C2500 Pickup 454/7
2 V8 1980 Mercury Grand Marquis 302/5 V8 1968 - 1977 Mercury Comet 302/5 V8 1964 - 1977 Mercury Comet 200/3
Part Number: MCB250
**Will not work on 1959-64 Pontiac Bonneville
Trinity 2 GM 6.6L L8T Gas Unlock and Tune Kit 9266-R exterior-body-parts 5 V8 1983 - 1984The 2020 2023 6. 6L L8T powered GM gas trucks have been locked down since their introduction. Owners of these trucks have been waiting patiently for a tuning solution, and DiabloSport has delivered in a big way! The new 9266 R kit includes our industry leading Trinity 2 on dash tuner, along with the locksmith device and harness required to unlock both the ECM in your truck. Once unlocked, the Trinity 2 offers up tunes for 87, 91 and 93 octane fuels,
