Wheel and Tire Choices for the '63 Dart

Didn’t notice any change.
Yes I used 73-76 A body upper control arms, spindles , lower ball joints , rotors, bearings ,seals , calipers , flex hoses and manual master cylinder .
You will need to save the push rod from the original single master cylinder . To get it out clamp rod in a vice and and smack the piston to drive it off . May need to slip an open end wrench on it to give a bigger target to hit.

If your brake lines are good , make a new line from the m/c “front” port the one closest to the firewall to the multi port block under the floorboard , get a plug to block the port you remove the line going to the rear brakes. Your front brakes are now plumbed.

Now from the “rear”port on the m/c the one farthest from the firewall make a line to an adjustable proportioning valve then make a line down to the rear brake line and connect with a line to line fitting. Now your rear brakes are plumbed .

You can also run 225/60R15 with no problem.