thinking about....
The 1966 was unique in many ways. If you are going for the stock look:
Try to read up on as much as you can online and ask members here or you may find the 66 you bought has 1968 doors and electric wipers which required a different windshield frame, newer dash, bunch of new holes in the hardtop because the windshield frame holes dont line up anymore.
That being said, buy a 1966. Good Luck with your search.
Ray