Keep in mind, if you run a dedicated ground for the starter/alternator between the battery and the block, you still need to run a ground from the battery negative to the body of the car or from the engine to the body of the car so that things grounded to the car body get a ground.Okay, I hear what you're saying, as if it's a problem to ground it to the trunk.
How to run a ground cable to the front chassis from the luggage compartment in the same size as the plus cable, when the chassis is grounded to the block would it work just as well or should I ground directly to the block? Better to be safe. Then make a battery killer on the go for the plus cable when not in use?
Thanks for a great description Jim and Eric!