Thanks man. I had a dig and apparently need four "VB921", one per coil-on-plug. My main drama is that I have to lose the dizzy cap, thereby necesatating some way to ignite the spark plugs at the correct time some other way (hence DLI). I don't particularly want to bung a Ford EDIS-4 setup on (toothed wheel on the front of my motor?) but I didn't think the Megasquirt II had four igintion outputs. May have to wade through some more info...