I was looking to get an exhaust for my GTS. I seen one on EBAY, HKS hiper exhaust, or a GREDDY EVO. I was also thinking Kazuma.. Any one have any info on exhausts, like whats a good one for a decent price..i dont feel like spending 700 on an exhaust..im not loaded...looking for about 3-400...any ideas would help alot...thanks