Planted Seat Bracket - Pontiac GTO (1964-1967) - Driver/Left Seats while the 330mm diameter is

while the 330mm diameter is perfectly sized for these high performance cars

and long-term durability on track or street

Designed using a driver's natural seating position

SPA Design's racing mirrors are designed for maximum performance with black

ultra-soft stretch Nomex material

Planted Seat Bracket - Pontiac GTO (1964-1967) - Driver/Left Seats while the 330mm diameter isPlanted Seatbase Adapter Brackets are an easy solution for adapting your aftermarket seat to the floor of your specific vehicle. Planted Seat Brackets are constructed from 3 16" thick steel for superior strength. Able to accept sliders from most major seat manufacturers like Bride, Cobra, OMP, Racetech, Recaro, Sparco, Status and more, allowing for easy installation of aftermarket seats in your vehicle. Extra material is also provided for direct seat