Trunk hardware

Don't know what they used for that commercial.
The one in my car is an E78-14, and the biggest offered new in '67 was D78. Later E70 was offered but not sure how the sidewall to to sidewall width differed, if at all. The E78 sits a little higher than the floor.
Thanks people for all the info. IMHO, fact is, whatever tire size that could fit there fush to the trunk floor would not make justice to a car like that and would be good just as a spare but once my spare tire is nearly 30 yo, it'd be a good idea buying a new mickey mouse spare and try to make the trunk look stock again cutting a new board for the spare tire. My jack also got a broken spring just for sitting there so long...