My 73 should qualify now thanks to Cloudy's great work, cutting metal to replace with glass is sacrilege.
Mark you are on your way.The neat thing about your year Ford is the barn style side doors interchange with the rear doors.
keep an eye out for a clean no window slider door and you will be there.
The good thing is the for mentioned mods are all bolt on's.
allot easier to do than what you just went through...