I really wanted to go dual but they're isn't anything dual i can find or afford. I was shooting for the rb full exhaust system costed way to much. My main plans now is single hks hi power exhaust + hks down pipe. I'm the age of 17, money is kinda an issue and workin on this kind of car is kinda hard on me. Im learnin off the forums and my 1987 - 1991 haynes mazda rx7 manual. Well i thank you every one for your facts and opinion i really wanted to do a monster look dual can't find brands i want i dont like borla or brands i never heard of gotta get a trusted review or from some one. I want something mean looking and great in performance. BTW i was soo effin happy when i first got this car! was soo stoked! well once again thanks every one.