Ventilated front disc brakes and fifteen-inch wheels were not left out of the package as well. Successive updating saw the bodyshell yield flared wheel arches and different sills. The car's design was also pushed further - or at any rate, creating more aggressive - with a deeper front air dam and rear underbody aerofoil. If this is true, it shows that this wasn't just like every regular vehicle produced. This may not be entirely forgotten like the rest because rumors have it that it still uses the road, though the wedges were converted. A production car like this at its time is a gold treasure. Its acceleration from 0-60 mph (97 km/h) in 4,5 seconds and a top speed of 175 mph (282 km/h). It has a five-speed gearbox transmission(Borg Warner T5). It has a Power Output of 325 bhp (242 kW) and a Torque Output of 320 lb-ft (434 N⋅m). The engine is an impressive TVR Power Rover V8 with a capacity of 4441 ccs (4.4L).

Curiously, gossip has it that additional SEAC's are on the road now than were produced in the initial place because several wedges were transformed to 450 SEAC spec afterward. In the aftermath, 450 SEAC was even more expensive to be built and purchased than 420 SEAC, so around 17 were made. The sole disparity was the engine which grew to 4.5 liters and about 325 bhp (242 kW) with 435 Nm torque.

It utilized the same fiberglass and kevlar body as the 420 SEAC and the same structure.

The TVR 450 SEAC is a sports car manufactured and built by TVR in a one-year run.

The tvr wedges vol 1 pdf