what 17 tires will fit under a stock 65?

Hey TRP ... the stock tire size was 7.75x15 as referenced here: http://www.idavette.net/facts/65.htm ... But you should contact Eckler's (1-800-289-3406) for information about the range of tires that can be used. They even offer reproduction tires as well. Here's a link to their Corvette tire page: http://www.ecklers.com/dept.asp?dept_id=261&level=2 Good luck!