Yeah, I'm not familiar with the Saturn thing, but I've recently done a lot experimenting on the GM LS1 motor ignitors, but they are single output. Also, the current limiter was very high, like over 7 amps, so I abandoned the project.
I've also done experiments on other GM, and Chrysler dual-post coils and coil packs, but they are just physically so big I couldn't fit them in the normal location, so I abandoned those studies as well (although electrically, they work OK with the HEI ignitor).
I designed a system for some Honda guys recently. They are lucky because they can use $20 GM coils which fit under their tanks. They don't fit on my bike, though.
My current project is to use the super-light Dyna mini coils (I found some new ones dirt cheap on fleabay)with an HEI ignitor (they won't work with stock Kaw ignitors).
I'm sure there are many other systems that can work, but the main thing I look at first is availability and price, then physical size and weight. Then I come up with a way to make it work electrically (dwell, current limit, etc.).
I don't want to spend too much time making something work, unless it's available cheaply for everyone, at any parts store. The Dyna mini's were just so cheap, but I'm really doing that excersize because they are so light weight.
Thanks for the heads-up, though, and keep them coming. I'm still searching for the perfect, dirt-cheap, automotive coils.