What makes a Vette sound like a Vette is that its a Vette....the motor, exhaust manifolds, exhaust routing, muffler type, etc.

There is not REAL way to make it sound like one--EVEN if you use a Vette style muffler. Just go with what is proven on the trucks...LT headers, 3" ORY...to a Magnaflow/Borla/Corsa muffler and 2.5" tail pipes...