Castle Performance -Grand Nattional, GNX, Turbo Buick - 650 Horsepower GNX runs in 4k

Castle Performance is a well known performance speed shop specializing in Grand Nationals, GNX and T Type Turbo Buicks. Although they can repair and modify almost any vehicle their true love is the Buick Regal as mentioned.
So USClassicMuscleCars pays them a visits to discover what they are all about ...and are we impressed. Both Paulie Sr. and Paulie Jr. have GNs in their DNA. Their both manage the shop and receive Buick Grand Nationals from many states.
Performance upgrades include- exhaust, suspension, turbo chargers, brakes, tires, tune ups intakes, engine upgrades, transmissions and restorations
Their show room is second to none...as you walk in there you know that extra detail speaks of their work.
Fair Use