A few days ago my negative coil wire for an msd coil got broken off and my car came to a die, I hooked the wire back up and the car fired a few cylinders but then died and never started, I changed the ignitor and tested the coil, everthing was good. Next I hooked up one of my friends stock distributor and the car ran fine at idel, I never test drove it. The next day I bought a distributor from a junkyard and the car ran fne but misifred between 2-3 thousand rpm's well the mis fire got worse and worse,until the point were the car would not drive down the street. Now it is so bad its backfireing through the intake manifold and smells like raw gas.I could really use any help. TIA. Oh yeah the set up is an obd0 z6 swap.