[Ieatcamaros]

This is not as hard as it may sound. You need to get a duraspark module, and a duraspark distributor. You said it was a 85 motor so you should have the right distributor. Go to the parts store and get an ignition module for an 85 gt. It will be about $15-$20. There are two connectors by the master cylinder. One black and one gray. Hook up the battery and get a test meter. Now turn the ignition switch on and start piercing wires in the gray plug until you find one that has 12v with the switch on. On my 89, the wire is red with a light green stripe. Get a splice connector and hook it to the wire that you found. Run the wire from the splice connector to the red wire on the module. Find another wire that reads 12v while someone is turning the key to start, but reads zero when the key is on. This wire goes to the white wire on the durapark module. Run a wire from the negative side of the coil to the green wire on the module. The purple and orange wires go to purple and orange wires on the distributor and the black is a ground. I recommend you ground the module on it's own and ground the distributor to the block.

Or my other suggestion would be to buy msd as Jester already mentioned. IMO, the duraspark is just as easy as the msd.

Your fuel and alternator gauges will still work if you didn't mess with that part of the wiring. I would get aftermarket water and oil pressure gauges since the stock ones SUCK!

One more thing, you can use the 4cyl coil.