Fel-Pro 326-455 Pontiac Exhaust Port Size 1.53" x 2" SB51201 This is the current standard

This is the current standard issue quick release helmet hardware set (pair) for your NecksGen Original and NecksGen REV devices

W engines if an Edelbrock #5409

No free air sensor calibration required - ever

Mechanical Pressure / Vacuum Gauges

Tachometer Wiring Harness

Fel-Pro 326-455 Pontiac Exhaust Port Size 1.53" x 2" SB51201 This is the current standardFel Pro deliver reliable sealing under grueling racing conditions. From the leader in aftermarket engine sealing, FEL PRO the gaskets professionals trust. Each gasket, set, or seal is built to meet or exceed all original equipment specifications and is validated for fit, form, and function. GMP Performance V8, 326 (5. 3L), 350 (5. 7L), 389 (6. 4L), 400 (6. 6L), 421 (6. 9L), 428 (7. 0L), 455 (7. 5L) Resists blowout and burnout from high temperature