I'm thinking that falls under the "If you gotta ask..." category. I tried hanging a '69 'stang fender on my '76 parts car and it wasn't even close. You will basically be chopping the rear half of the fender off and grafting on a Maverick fender. Then spend a ton of time getting the body lines and everything looking right. I was going to get the fenders off that wrecked MavStang back when Dave originally posted it was wrecked, figured it would be easier to fix the accident damage to those fenders then to start all over, but I was so busy with work at the time that it was just impossible to get away long enough to make a trip to Florida.
There is a Maverick in Brazil with '71 Mustang tail lights. I though it looked good. The console and steering wheel here looks good to! (Mustang II). How about Mustang II tail lamps?
Here in Brazil many people do change the tail lights. Most using the 71/73 or Shelby 67 Stang tail light. I guess the 67/68 would fit nice like the last picture, but I've never seen one(the picture is fake- credits to Lombardi's Customs).