My coil is mounted upright on the right side of the engine bay closest to the distributor . .My 6AL box is mounted inside the car on the passenger side up under the dash where the foot well meets the firewall..High enough to where it's almost not seen.What type of cylinder heads are you running?Because as far as spark plugs I'd go with the AR3911 Autolites..With MSD I gap my plugs at .040 I've never been much of a Champion fan..