Hi reign,
First welcome to the club and congrats for your new ride. You will deffffffffnetily enjoy it every time you start it. I have an firestorm 86 since more than a year now and I installed a greddy evo3 exhaust in one thousand dune. To be honest my car is not my daily driver since I live where I work
so just completed 15k after one year and I enjoy the exhaust sound a lot. It is loud on idle when cold then it becomes bearable but even fun to hear. Not sure if you drive it everyday and for Long distances but so far I have never complained even when I am driving it back and forth to Dubai. With regards to Police, I never faced a problem or was stopped here in Abu Dhabi however I try to behave when I see a police car
I would recommend you go for it and enjoy it.