A real engine. Dosent matter if its Chev, Dodge, Holden, Ford its gonna beat the shit out of a fart-can possesing turbo four cylinder. Think about it: You do the exact equivilent modifications to a v8 powerhouse and to a 4 cylinder fart-box you will always get more horses out of the v8. Its simple maths. More cylinders= More Displacement.
I love it when i scream past a wanker in a 4 cylinder hatchback with a 10 inch tacho and 36 inch exhaust, and scare the absolute shit out of him, with my Holden ute, powered by a quality Australian V8.