Ultima GTR
Engine type: pushrod 16-valve V-8, aluminum block and heads, GM engine-control system with port fuel injection

Displacement. . . . . . . . . . . . . . . . . . . . . .346 cu in, 5663cc
Power (SAE net). . . . . . . . . . . . . . . . . . . .345 bhp @ 5600 rpm
Torque (SAE net). . . . . . . . . . . . . . . . . . 350 lb-ft @ 4400 rpm
Transmission. . . . . . . . . . . . . . . . . . . . . . . 5-speed manual
Curb weight. . . . . . . . . . . . . . . . . . . . . . . . . . . 2314 lb
Zero to 60 mph. . . . . . . . . . . . . . . . . . . . . . . . . 3.3 sec
Standing 1/4-mile. . . . . . . . . . . . . . . . . . .11.9 sec @ 117 mph
Top speed (redline limited). . . . . . .. . . . . . . . . . . . .157 mph
Lateral grip-1.1g?

You can change the engine cuz it accepts any small block chevy

Noble M12

Noble-developed, all alloy Duratec V6 2.5litres. Mounted mid transverse. Four overhead camshafts. Four valves per cylinder. Electronic fuel management. Twin-Garrett, T25 water-cooled turbochargers.
Air to air intercooler.
Max power 310bhp.
Max torque 320lb/ft.
Kerb weight approx 980kg.
0-60mph-3.9 seconds
1/4mile-12.5 seconds
Peak lateral grip (on road tyres) 3.9 seconds-1.156g

They are both very fast and the Ultima GTR can also be registered within the US.