Yes, I can understand the whole weight thing, but to me, single exhaust vehicles are a dime a dozen, and you seem them everywhere. Even on the oversized behemoth's (SUV's). But "our" machines are not a dime a dozen, and you don't seem them everywhere, except S2K rallies! The duals on our vehicles look good, and look intimidating and powerful when sitting behind one, at least to me they do. Aren't our babies powerful? So why not have a powerful look? Makes all the sense in the world to me.
