Just back from an interstate road trip, and got defected in Victoria because the muffler was 10mm too close to the ground (Highway Patrol initially stopped us because "your number plates have a black background", but then went over the car until he could find something/anything to defect).
I've had my Stagea for 3.5 years, and the coilovers (set to max. height), wheels, and exhaust (HKS 3") were unchanged since import.
To get the clearance to the minimum 100mm, I had the HKS muffler removed, and a hotdog fitted in its place. It's a little noisier from the outside, but now I've got nasty resonant vibrations inside that are making my teeth grate....
Any suggestions ? I suspect I've made a big mistake in doing the "quick fix" and destroying what was a well-tuned system.