Since I've run out of juice in the Fab9 COP kit and don't want the issues with heatsoaking the driver for it, I have decided to go to D585 GM coils. I do have a few questions, all kind of tied together.
1. Brackets: Make one or buy one, I am not finding anything out there readily available. I do like how compact the FM Big Spark kit is, and the firewall mounting location, but cannot find the mounts alone. Most that I've seen custom made have been a hit or miss, function is important but I do want a clean appearance to be in line with the rest of the build.
2. Wiring: Where I mount the coils also dictates how long the wires from the spark plug to the pack will be. Is a 3" wire really more effective than a 9" wire? I'm comparing say mounting them near the valve cover/intake manifold vs mounting on the firewall. I know short wiring is where it's at, but 9" or whatever it is from firewall to the cylinders is still short IMO.
I have a harness lined up, I am getting OEM D585 coil packs, but depending on the answer to question 2, question 1 may have to adjust. Below is a photo of my engine bay. The silver bracket behind the exhaust side of the valve cover is where the Fab9 module lives. I'm thinking of that firewall area to be the home for the GM coils, but wanna see what others have.