Depends on what you will be doing with the car. The stock system can take some very simple upgrades that would give significant relief to the factory setup and save you some serious money. If you do plan on big stereo, A/C, and other high amp items, then, yes, rewire the car. However, if you are very limited to your electrical skills, you may find yourself way over your head and you try to complete setting up your circuits. There are three simple upgrades you can do to your factory setup that would really make things function better. You will notice an immediate improvement with the headlamp function. 1. Headlight relays - There are kits available, or you could wire your own. Very simple and have been outlined in detail many times here on the list. Takes a lot of the load off the interior headlamp switch and bulkhead connector. 2. Bulkhead bypass circuit - Very simple upgrade. All that is required is an additional wire run from the hot feed of the alternator around to the starter relay. Needs to have a piece of fusible link added for protection. This again takes a large load off the bulkhead connector and you can keep the original wiring in place that feeds the dash, radio, and other interior items. 3. Not necessarily needed, but a great upgrade - "Run" circuit relay. By adding a relay to the "run" circuit, it again takes the load off the bulkhead connector and provided a good solid 12.5V+ to the ignition system. Basically, by adding these 3 relays (high beam, low beam, run), you will provide new (shorter) hot feeds to the relays and the original wiring that used to have to carry the heavy load just provides just enough to switch the relays on and off. This may be something to consider if you would like to keep your "restoration" closer to looking original as you can easily hide the relays under the battery tray, or other discrete locations.
