We spent a lot of time looking for a quality, affordable four channel distributorless ignition module. All we found were expensive German and Japanese OEM ignition modules, and some Chinese knockoffs of unknown quality. So, we decided to tool up and make our own. Check out the result - the QuadSpark:

Using the QuadSpark Ignition Module

They're perfect for running modular motor COP ignitions on MS3X. Use two of them, one for each bank.