MSD Ignition Pro-Billet GM LT-1 Distributor Features: Advanced Optical Encoder Trigger Design Designed For Accuracy And Reliability Easily Adjust The Timing Up To +/- 6 Degrees Improved Housing Design Eliminates Leaks Supplied w/Heavy Duty LT1 Cap And Rotor Sealed To Keep The Elements Out Large Ball Bearing Stabilized Timing Rotor Drive Is Positively Indexed For No-Lipping Height: 12.80 Width: 4.50 Length: 9.80 Weight: 4.00 lbs Vehicle Type: 2717 Fitment: 1997/Pontiac/Firebird/Trans Am Coupe 2-Door/5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated^^1997/Pontiac/Firebird/Trans Am Convertible 2-Door/5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated^^1997/Pontiac/Firebird/Formula Coupe 2-Door/5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated^^1997/Pontiac/Firebird/Formula Convertible 2-Door/5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated^^1997/Chevrolet/...