Ignition upgrade to full coil system

Going to Megasquirt seems a bit overkill to just cure some pre-ignition.
In the end, the engine will run better, but if you can't fix the detonation with the simple stock ignition system, you won't be able to cure it with the much more complex system of a Megasquirt.

That said, you could look into a simple programmable ign. timing with vacuum input like to the 'BlackBox' from CB Performance ignition;
http://www.cbperformance.com/ProductDetails.asp?ProductCode=2013

I've recently bought it myself to have some easier control over ignition timing, instead of having to completely disassemble the stock distributor everytime I want to make a simple change in the curve fi.


What all has been changed and modified on your engine anyway?