Utah, I have used the snake oyl rear sub assembly to delete my muffler from the car. It simply replaces the stock assembly from the diff back. Unbolt the old, slide the new one in..fit is perfect. I actually have mine for sale if you are interested.
[email protected] email me if you are interested. But in re-reading your post I see you are talking about the cats and resonators...from what I have heard removing the cats can cause a check engine light. If that doesn't bother you, then I have heard of no ill effects of removing them other than being bad for the environment. On the tires....I have done some research on this recently. The biggest size drag radial available is a 315/35/17 which some people on the board have used on stock viper 17" rear wheels, but manufacturors claim is not the best as it stretches the tire too much. You can pick up a set of viper front wheels and wrap them in 275/40/17 drag radials and mount on the rear. Obviously I would switch back to normal pilots following the drags, but you can drive there, race, and drive back on your DR's. I was looking at Nitto tire for DR's, but following a conversation with Luke at
www.tirerack.com, have decided to go with BFG drag radials. He uses them on his personal drag car and says they are much better than Nitto. Cheaper also! Nitto's run $189 each while the BFG's run $153 each.
good luck!
