I recently bought a wiring harness to do a V-8 swap in my Isuzu from a very helpfull man. He has started his own company and makes and sells wiring harnesses to Summit and Jegs and they put their name on it and double the price. His name is Bill from
www.hotrodwires.com He will have anything you need and is very knowledgeable and will help you after the purchase to make sure you do it right, he responded to one of my emails within an hour, literally.
Just trying to help some fellow minitruckers and pass on some knowledge to anyone that wants to save about 150 bucks.