I think that the look of the LS1 TA's stock round exhaust tips was an afterthought by the car's stylists. They also don't look right in the rectangular cut-outs in the lower rear bumper fascia.

I'd like to install some rectangular tips to better fit the fascia. I do NOT want to replace anything on the stock exhaust system or harm it in any way.

Does anyone know of a supplier of exhausts tips that will screw over (no welding) to the stock exhaust tips, not burn the fascia, and that can be easily removed without damage to the stock tips?

Thanks