LF DISC BRAKE KIT/HELP 67 DART

Get the DoctorDiff kit. Best out of everything you posted there. Specify the 5x4” bolt pattern and keep your current wheels. When you have the money later, just buy standard 73+ disk rotors and viola, you’ve upgraded to 5x4.5”. The DoctorDiff kit uses all 73+ mopar disk brake parts. He now offers the rotors with the 5x4” bolt pattern like the PirateJack kit started doing a year or two ago. But DoctorDiff is a great vendor, has a ton of mopar knowledge, and has great customer service. Which is better than can be said of your other choices. And unlike the other choices, you can buy all your standard replacement parts straight from any parts vendor with the exception of the 5x4” rotors, because the rest of it is OE replacement parts for a 73+ car.