Trying to find a true bolt on, NO modification axle back exhaust system for a 1991 coupe. Have tried ZR-1 and LT-1 Styles from Mid America. Nothing seems to fit properly, 90 pipesaren't bent properly so pipes don't line up properly and both seem to hang too low and seem too short(don't stick out far enough from the rear of car.) Is there an issue with 91's in particular? any help with this would be greatly appreciated. Been without my car for 3 weeks now trying different systems.

Thanks