What do I need for a proper under-dash rewire?

Wow! You guys are awesome, thank you for all the info! I do have a question about protecting the wiring, I know that Ma Mopar used tape to wrap the harness from the factory, but what's everyone's thoughts on the braided harness sheathing? We used it at my work and I like it a lot, it's relatively easy to install and gaining access again is easy if you need to fix or add something. I'm not too worried about keeping an original look at this point, but what do you all think about it?