Any information on them..good/bad or pros/cons. I found them for $350 and I was wondering if thats a good price. It said something about them being the old style with welded resonators. Can someone tell me what that means? http://www.lmperformance.com/3513/50.html Thanks Edit: I did some research and found out the dif btwn the old and new. BTW, I would stay with the stock H pipe. What do you think?