Chex I ordered my B&B 3" catback from Roe and they made me an offroad pipe that bolts in where the factory cat goes. Works great, and I can easily swap in the cats if needed. Give them a call the can make something, but you need to give them the length, or go with JDs setup above, you can't beat the price.
Also you do not need O2 sims on anything under 1998 (definitely not on a 96 RT/10).
Cal