If your GF is riding it too, i'd get a charging aluminum flywheel before a pipe. The chamber section on the stocker is longer on the '95 onwards models to give more torque. Ignition advance is a cheap way to boost acceleration too. If it was me, i'd move the pipe and buy a flywheel, you'll be surprised with the power delivery. It's possible to turn that pipe, and any other pipe, into a stump-puller, message me for details