More sway bar pics and measurements please
I have a similar setup except i have low restriction mufflers. Its not being an ass they just shouldn't follow that close

Being an ass is driving through a residential area at 2 in the morning laying 4500rpm on in second gear and braking with the engine and knowing its gonna crackle and bellow. (No I haven't done it)
When I used to deliver pizzas with mine, the stores parking was in a small underground carpark car alarms do work off reverb at idle