Wiring Clean-up/Simplification

I have 2000 Magnum 5.2 in my 63 Dodge Crewcab. I really enjoy this motor in my truck. I currently have the complete harness in my truck from the donor Durango. I am looking to "clean-up" the wiring. I have read through numerous threads trying to find exactly what I do and do not need. I would like to put my original guages back in the truck instead of the Durangos I have in there now. I don' mind under the hood wiring, but the giant cluster of wires I have under the dash is starting to wear on me. I know there are guys that do wiring harnesses for a living and I understand that puts food on the table. I get it, I'm not trying to take that away, I just can't justify paying $700+ for a harness. Any info/ideas would be appriciated. Thanks