If I may comment here even though I am a C5 guy. I have Corsa X-Treme axleback for C5. I shopped and shopped for the cheapest price I could find on the internet. This was about two years ago. I got it for $980.00 from a vendor that I cannot recall right now. I installed the system and of course liked it. About six months later I was under there and discovered some cracking. Don't be alarmed yet, there's more.....I contacted Corsa and even attached some pics of the cracking in the E-mails. When their customer service representative called me back, he explained that (by looking at the pics) the system I had been sold was of an old design that Corsa recalled. The vendor that I bought from didn't bother to send it back to Corsa. Instead they continued to sell it to the customer. Corsa honored their warranty very quickly. I simply provided them a credit card number and they sent me a brand new system with a pre paid return shipping label. I am my own personal mechanic on my C5 so when the new system arrived I installed it and using their packaging material I boxed up the old one and ran it over to the UPS shipper and sent it back to them. The whole process was very stress free and painless. When comparing prices please keep these things in mind. Also, SLP sells foreign made stuff and there IS a difference. Corsa is 100% American made and the quality excellent. There really is NO DRONE with the Corsa product. My nephew has SLP loudmouths on his LS1 Camaro and it drives him crazy with the drone. He has automatic transmission which makes it worse because he can't select a different gear to get rid of the drone. I know we're talking about an entirely different animal here but my point is, if he would have went the few extra bucks for the Corsa system he would have been happy. Now, he's stuck with what he's got. When it came time for me to later install a header system (ARH long tubes) the Corsa mated up perfectly with no alignment problems. There is now a tolerable amount of drone because I have installed a header system but I can't blame Corsa for that. You will LOVE the sound of the Corsa. The sound is absolutely infectious from the drivers seat especially if you have a manual transmission. I know I'm rambling on here but I really wanna' help you make the right decision. Hope I helped.