I'm with Rapid & 340 on this one. I run a MSD, but I had good luck with the stock ECU's and the orange one I ran. For spares, I suggest you test them like 340Cuda says and throw a couple boneyard ones (per Rapid) in the trunk after they've been tested. You can buy different ignitions which are better, but if you're already wired up for a factory-style box, then all you need is a screwdriver (or wrench) to change one...I'd go that way....2 screws, one plug

70 Roadrunner convt. street car 440+6, NOS, 4-spd, SS springs '96 Mustang GT convt. street car '04 4.6 SOHC, NOS, auto, lowered "Officer, that button is for short on-ramps"