I run an MSD ignition DIS-4 on my 94 SC. I like it, a lot of people have problem with it because they use a stock style plug. I use cheap Autolites non platinum and with has a bit more of a kick that it did when I use to run the double platinums. The install is very simple just finding a place to put it is kinda hard. It does have a lot of cool stuff. My dad works at MSD so I didn't pay full price for the box, so to me it was worth it. I do agree with Aaron for the retail price of the box I think an EEC tuner would be a better buy.