@Starcade Haven't you ever watched #BreakfastAtTiffaneys (1961) made just 5 yrs before #BlueMax (1966)?
#GeorgePeppad plays the budding artist being "kept" by a rich woman in a supporting role vs #AudreyHepburn who plays the high class "escort" that he falls in love with.
This is a must see if you've never seen it before.
As for Peppard, I like him best in the TV detective show #Banacek which was probably aired before your time but should be available for streaming somewhere. This show was running "live" on network TV when I lived #Brookline & #Cambridge when I was going to #Harvard.