So I'm a little confused. Read through the tech tip to use a 12 boot generator for upgrade. Everything makes sense except the 12 volt coil. If you install a ballast in line to coil does that not reduce the power? I would think you would retain your 6 volt coil. I've also read most coils are 6 volt anyway. Some just have a ballast from the factory. I'm assuming those are 12 volt systems. I have everything from a 57 so it would be pretty easy except for the fuel gauge. Thanks for any advice.