Here are some photos of my 1996 Griffith 500.
Rover-sourced V8 engine, itself Buick-sourced, all-aluminum, stroked by TVR to 5 liters (305 CI) of displacement with a custom crankshaft, custom connecting rods, etc., etc. Power is advertised at 340 hp, but in reality it's more like 280, comparable to an OEM Pantera, but with a weight, verified with mine, of only 1060 kg (Thanks to the aluminum engine and the laminated bodywork) compared to 1400 kg for the Pantera.
Unfortunately, unlike the 351 C, it's difficult to significantly increase the Rover's power; even in competition, it barely exceeds 320/330 hp. The bore, only 94 mm, doesn't leave much room for the valves, which are too small.
A very good, very rigid tubular chassis with four independent wheels via double wishbones. With the engine positioned at the front but well back from the front wheel centerline (front center position), the weight distribution is 50/50.
The problem with these cars is the perforating corrosion of some of the chassis tubes, especially with those from England, which is the vast majority, where there is a lot of salt on the roads in winter. When I bought mine, there were holes much bigger than my thumb in some of the tubes, and it's IMPOSSIBLE to see them without removing the body. I know many sellers claim otherwise, but it's false. Without removing the body, you can't see the areas that rust the most, just as you can't protect them from rust.