I want to get an exhaust, but I'm not looking to spend $500 on a catback. For now, I just want a muffler, and possibly custom piping in a few months (a little strapped for cash right now). Downpipe eventually, no turbo in sight. This is for an R18 by the way. I came across these deals on eBay for $129 shipped. I know the guy is pretty reputable, I've purchased my S-Techs and Skunk2 rear camber kit from him w/no problems. Just not sure which one I'm better off with, one is 102mm, the other is 168mm. All thoughts are welcome, please help me out.
168mm
http://cgi.ebay.com/ebaymotors/SKUNK...mZ260187632248
102mm
http://cgi.ebay.com/ebaymotors/SKUNK...mZ260187632136