Painless makes a generic wiring kit for street rods, and that is the one I am going to use for my glass 34 project. As you suspect the grounding is very different on a glass car. I am planning on placing grounding terminal strips at strategic locations to facilitate grounding. You application wil probably use a generic kit, with your modifications for your car. At best the generic kit is just a starting point and will provide all the standard things like alt, starter, lamps and others. You will have to add or modify the wiring to incorporate what other functions you desire. You will become a wiring expert in the process.