Not sure how well a few movies I can think of at the moment would rate with you both. I really liked them when I saw them as an early teen growing up - still like them today.
"Death Race 2000" - with David Carradine and Sylvester Stallone. A cross country car race where the goal is to (humorously) score points by running over pedestrians. He would probably like the cars and the theme of the movie. There is a little bit of nudity if I recall.
https://www.imdb.com/title/tt0072856/
"Rollerball" Is about a violent sport which is a combination of roller derby and roller skating. He would probably like the game and action scenes. If I remember it felt a little long in some places at a 2 hour run time when they focused more on story telling. Not sure of his attention span for long-ish movies. Can't recall about any nudity but it is a 70's flick.
2h 5m | AA
www.imdb.com
Thought of another:
"The Italian Job" - Michael Caine schemes up a gold heist with Mini Cooper cars in Turin. Great action and car chase scenes.
1h 39m | PG
www.imdb.com
Or are you seeking older movies in black and white with a thriller / horror type bent?
"The Day the Earth Stood Still" - aliens being aliens.
1h 32m | U
www.imdb.com
TV series:
"The Twilight Zone" was /is an amazing series. The episode "To Serve Man" an episode about aliens visiting Earth.
25m | 12
www.imdb.com
"The Outer Limits" another great series back in the day.
44m | PG
www.imdb.com