Coil On Plug ignition

I now run COP Coil On Plug ignition on the 20v. I got six of these coil packs from an Isuzu Rodeo. They each needed to be shortened by about 1/2 inch to fit better on the 20v. I made a plate to bolt them to, to hold them in place. I use an AEM twin-fire ignition amplifier to drive the coils, and I have #1 and #4 in series, #2 and #3 are also in series. This only uses 2 channels of the 4 channels available from the Twin-fire box.