Two things stand out as the 1970's on these in my eyes.
Son of Ford's wheels and tires...fat tires and the star mags were so far ahead of their time! They look like something you could buy today even. With that said, I don't see them as being "tradition" since I doubt hardly anyone had them and those who did weren't running them on streetable hot rods.
What doesn't cut the traditional standards are the front tires , laker pipes and well....the overall styling is dead on 1970. Remember I am speaking traditon on a TRaK level. Traditonal is really 1965 and older.
TRaKable or not....build one anyways, they are both cool!