What you see above is over kill but a rewire is not a bad idea. if you have a 255 high flow and the proper size injectors it is not realy needed. When i rewired my car i did notice the volts went up almost 2 at the pump. But if you are getting the fuel you need then i wouldnt worry about it. I dont know how hard it is to do on a 2g. A 1g AWD takes no time at all.