66 d100 dodge my son is considering, your thoughts
No offense meant, but I never liked the styling on those first-generation D-series trucks very much, and it is very difficult to find parts for them.
I greatly prefer the styling of the third generation D-series (1972-1980), and it is a better, more refined vehicle in many ways, especially after 1978 when the steering was revised. Parts for the third-generation D-series can still be a problem, but not as difficult as finding parts for the first-generation trucks.
And third-generation D-series trucks are dirt cheap!