Just a thought, you may want to reconsider the 66 new yorker for the brakes, those early units are very hard to get parts for and can end up being expensive for spares if you do find them. My suggestion would be to go would a set of 69 - 73 disk brakes with the premium set being the 73 year as the parts for these are the cheapest when it comes to the rotors themselves. The parts for the later units are readily available. They also are a bolt up for your car, no modification needed. The power booster will also bolt in if your car doesn't already have one.