RX-7 Turbo II

i have a question....i want to buy an exhaust but i do not want to blow out all of my money. i want an exhaust that has atleast a 2.5" or a 3" tips. i still want a dual exhaust tip look. and i want the exhaust to have atleast a good sound, not to loud but yet ppl can hear me as i zoom pass them. i have a 1987 turbo 2.if someone can help me out i would really apreciate it.....thnx