I really think it best to have exhaust work of any kind done at a muffler shop, but a competent one. Those guys are masters at working with precision fittment of exhaust pipe. The SRT is a bit hard to work with. Getting those tips to line up with the side sill off the car really requires several measurments of where the opening was before you took the sill off. If the tip is a not a double wall it may be to hot to be near the side sill. Read what I said above about tips with rolled edges on them. I hate the way they create a turbulance, and blacken around the ring, and get pretty hot no doubt.
If and when I make a complete system for the SRT, I will locate a primary cat. in the side where the sec. cat is, and for a lead off pipe, with a mandrel bent pipe I will install a high quality flex joint about where the oem one is, and you can't use the one on the car. I beleive it's attached to the primary cat permanently. As for getting the tips,(hopefully the tips that I'm selling) we need to have a templete for the muffler shop to work with when the sill is off the car. If we are using my tips, I think they should be cut down short, and the opening in the side sill should be cut open a bit at the small sec. of the oval. This can be done with a dremall style tool. I then would watch out for discoloration.
A good muffler shop will impress you very much, but finding them may be a problem, and I advise getting the car to them early in the morning.
I wish you guys could here a car that has had what I have done to my last two SRT's. Very simple and inexpensive, and the sound is great.
Skip White