Give it even a LS9, that wouldn't help you much. At the track that would be hopeless, being non maneuverable. Also wouldn't a top speed recorder cause this has not enough aerodynamic body. But it would be quite a good weapon to set fast 1/4 times. But the wheelspin would be.. burnout, damaging the time.
Setting a big supercharger engine into this gross - kinda like a Shelby GT500 SuperSnake as a result. Hm, they both bodies with similar proportions, even gearbox is used absolutely the same. Hey, you'd make an Austalian SuperSnake!