Motor Trend has put (I think) every issue of Hot Rod online in their app. I don't know if all the articles are all there but I found the first one already. 70(?) years of magazines for a couple of bucks a month is a pretty good deal in my mind.
I also have most of those years of Hot Rod still in my closet. So I might be able to scan them for you as well if you had a list of the month and year you needed. No promises, but I could try.