That would get annoying, aren't they supposed to sound like a gun going off when shifting under fullboost? you could always try trading someone, post up an ad. On the exhaust you could probably just getaway with changing mufflers. I had my cheap ebay 3" exhaust system changed to a magnaflow because the 5" poop-can canister was way too raspy. It was about 120$ to get one welded on by Bill at arizona exhaust(prescott). He really went out of his way on mine, tucking it up, out of the way of the rear diff.