I agree with Don, 15" is the way to go. They were an option in 62, (and other years?) and would be period correct looking. I have a set of 62 series and dog dish caps that I run on my 62 from time to time.
15 x 7, 215/70 front and 15 x 8, 255/60 rears. I had them powder coated to match the car. I think I spent around 1400 for everything...
http://www.summitracing.com/parts/WVI-62-5734044/
http://www.summitracing.com/parts/WVI-62-5834044/
Mac........................your car is just bitchin'!!!!!!!!!!!!!!!!!!!! Congrats!!!!