i have a b20 in my 94 civic coupe, i was just driving it and blew up my stock muffler, the engine is stock, just has advanced timing and DC headers, what's a good exhaust system to run?? i don't have a lot of money and i want to keep it as quiet as possible...how can i give it the flow it needs but keep it quiet??? right now it has no cat, and has a stock resonator??? would the resonator restrict flow also??? what's a good size piping and what's a good muffler to keep me quiet????