Yes! It's an ISIS multiplex wiring system. I'm a couple of weekends away from starting that process; the coolness of the ISIS system cant be denied! from what I've researched it's very reliable as well. My engine management system is from Dunne-Rite Performance and is one of their very first 4V modular swap harnesses. Very well dedigned, three wire hookup with PATS, EGR, downstream cats, and speed control defeated. More on this system later. We're also using one on the TRUCKS! show in a V8 Ranger we're building... I'm waiting on my gauges and installing the 04 Cobra dash into the car before I wire and plumb. The late model dash is only a couple of inches wider than the inner assembly in the '66, but I don't anticipate it'll be easy to do..... I also wanted to weld in my firewall before cutting the dash out just in case there would be pressure/tension issues I'm going with the Autometer gauge pack for 04 Mustang with pillar boost & wide band gauges. I've got the power seats from a wrecked 05 GT and will have some kind of rollbar in place, along with good belts. I spoke with Brett (ridetech) @SEMA and he said they're working on a tiger cage for early Mustangs, and I love the way those systems look. I want a really clean look inside and under the hood, but a safe ride as well; good brakes, nice handling setup, and probably wider (stickier)tires before the car debuts anywhere. Power goals are an honest 500 RWHP, which is very doable with the Terminator/T56/ 9 inch 3:70 combination. I pan on functional brake ducts fro the side scoops that haven't showed up yet... Im incorporating aftermarket late model scoops and will rout Shelby-like ducting to the rear rotors through the quarters. I still have to mini-tub the rear wheel houses, and generally clean up a bunch of welds on the main tub before priming and blocking. I'll be running with A/C as well.... early Mustangs dont ventilate well in the best cases.... I want to be comfortable at speed and have A/C at autocrosses. I plan on ( in all my free time...

) attending as many NMRA, Goodguys, Sema shows as possible with it, and I'm actually saying out loud that this coming (2010) summer it'll be done. I don't know how, but it will. Now that all the main vehicle systems are actually sitting in boxes at my shop I've got no excuses! Nearly forgot to add Ricks Hot Rods SS fuel tank, and FORE Precision fuel hat and billet rails will complete fuel delivery (through braided stainless lines and a/n fittings.)
Thanks for the kind words, and thanks for asking about details... I've been driving this one in my mind for a while now. LOL!
KT.