what they do on the race cars is run the negative right to the frame an the positive goes all the way to the starter or if not gm to the sylinoid inside the frame rail, and have a negative ground from motor to frame. since your car is glass an you have the battery in the trunk this would work best. a battery box can hide the wires quite well if you plan to have it in car shows. and you want the battery on the same side as the starter either driver's side or pass.