I've been doing some layout of the intake ports with cardboard just to see what sort of room I'm going to have around the runners. There is going to be a ton of room under the plenum. I'm thinking of mounting the coil pack upside down to the outside of the bottom of the plenum. The ignition wires would have a nice smooth path out between a couple runners and over the valve covers. There would even be enough room left to mount both primary and secondary injectors to the inside of each runner in the valley area. The fuel rails would run front to rear under the coil pack.
With the coil pack mounted to the underside of the plenum of an alcohol engine, that's probably going to be the coolest place possible to mount a coil pack in the engine bay.
With the coil pack mounted to the underside of the plenum of an alcohol engine, that's probably going to be the coolest place possible to mount a coil pack in the engine bay.