Most comments are correct. EZ is dirt cheap so its in my price range. Ive done both ways, using ez and redoing my original harness. The EZ routes is SO much better.
The wires are good quality and you have plenty of it, no skimping on lengths! You wont realize how much you appreciate the labeling on the wire till you use one. The only thing I was not real happy with was the fuse box, compared to some of the other harness companies its cheap, about like an 80's car quality; but youll have to make the decision whether its worth the extra 100-150 for a fancier fuse box.
The other posters are correct, it NOT for a resto. And no matter how good the product, youll only get what quality you put into it. Trying to save an original harness Ive spliced so many old crapy brittle wires where I cut half a wire segment out and replaced that most of it entirely that the EZ route is just better.
Not meaning to be negative but I've used a few hot rod wiring harnesses & while they have their place they really don't work well on Mopars.. They are designed primarily for hooking up directly to GM switches/connectors, they don't deal at all with the hole left by eliminating the bulkhead connector so you'll need to fabricate something for that... Honestly I typically try to save the dash harness & the headlight harness repair them as needed, add relays for the headlights, new engine harness, new tail light harness.. Maybe add relays for the heater-A/C fan & see where your at..
I'm a professional that's made a career in doing auto-electric and under dash work, have all the right tools for stripping, crimping and terminating things right, so-YMMV. They do have very good instructions and a worksheet so you can make a plan of attack on what circuits you will need and how to lay them out. 
