Yes you can force fit that 67 Mustang centerlink and screw on valve on a 64-66. It will be a nightmare at best.
First thing go to farm store buy a Mig welder, plenty of cut off blades, then stop at corner convenience store for 3 CASES of Bud light-You'll probably need more??
You can do it--I think. Time, confusion and anguish will be the norm.
Now if picture posted is not planned unit, send pictures of 64-66 unit.