Plug-and-Play Wiring Harness

I realize this is an older post and maybe no one following anymore but I'm just now at the point in my restoration of a 67 Barracuda FstBk that I am looking at wiring system. Since I pulled everything out of the inside of the car including carpet as well as everything in the engine bay, I figured a good time to just rewire the whole car while everything is more easily accessed. Ounce of prevention vs pound of cure, right.

Anyway I am looking at the American Autowire kit# 510603. I kinda like the idea of the GM style bulkhead with the bolt connecting the interior fuse block to engine bay instead of just snap fasteners/connectors. I was wondering if anyone had actually installed one of these personally? Any issues they ran into? My car is a 4spd, so wasn't sure if the kit may be for a column shift automatic or 3spd std on column. Mopar may not have ever made a 3 on the tree but just thought I would ask.

Thanks everyone
I started by reading the first post here and the op has no time to do this he's already in trouble lol...
Even if there was such thing as a complete 100% plug and Play they're still is a lot to plug and get the wires tucked away and secure and all their proper places....
Most cars are deserve are going to have a column ignition and a column turn signal plug as well. I'm more of a fan of taking the old plug out of the original harness and grafting that into the wiring harness so if I ever have to change my ignition switch or my turn signal switch it's a plug and play deal instead of making those Chevy connections. The differences between three speed four-speed automatic is all in the reverse lights and in the neutral safety switch for the ignition... I've done many many American Auto wires in Chevys and forged trucks and cars but not in a mopar. I just did a generic kit for $85 from speedmaster in my power wagon. Using a lot of the old connections for my original wiring harness but all new wires... I probably wouldn't recommend that for somebody without a lot of experience though... Did anybody thinking they're going to get a plug and play kit done in a weekend is going to be in for a rude awakening especially if it's the first time...