nope, no one on here uses aftermarket exhausts...
there are many exhausts in different sizes and noise levels, we need a lot more information from you to help you pick an exhaust...
how much are you willing to spend, what mods do you have now and what are you planning on doing in the future...for n/a you need the smallest exhaust diameter for the power output to maintain exhaust velocity, with a supercharger you want to run about 2.5 but no bigger, smaller might limit hp...for turbo you need to go bigger on the exhaust...
there are plenty of threads in this section you posted in already covering exhausts, please search and read whats already been posted, THEN you should ask our opinions on a few different exhausts for your application
since you are new, i suggest reading these two stickied threads if you havnt already...i also suggest next time using the search function since this has been covered many times...
http://www.ephatch.com/forum/showthr...E-READ-Q-amp-A
http://www.ephatch.com/forum/showthr...nd-Forum-Rules
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