an electronic reg is a good addition, the old ones can be problematic. I would clean ALL terminals/connections including ground paths & I would run 2 wires straight thru the bulkhead for the (2) main in/out wires (drill out the 2 on each side bulkhead cavities (tossing the 4 brass terminals) and leave 3 or 4" inches of wire length on the inside under the dash so if you seperate the bulkhead again to clean terminals you can pull the forward half out that far. this will give you a top notch system as far as minimal voltage drops. relay add ons to the alt & never use the alt to charge a depleted battery. stay with an externally regulated alt. keep th aammeter needle close to 12 O'clock at all times, this shows the system is in equilibrium, that the alt is supplying the system needs & he batt is pretty much out of the picture as far as charging or discharging & is only being topped off slightly. highest OE alt is a 78 amper for an 85 M body & needs the chebby swing bracket. there is the 100 amp Leece Neville beast which is heavy & has its own bracketry (does work well.