The MS trim was the standard car with a single barrel carb and “mixer” motor (ie. without oil injection, you had to mix oil with the gasoline when filling up).
Then you have the MD (deluxe trim) and LD (standard car but with the triple carb motor). I’m not sure if the VS is a standard trim V4 engined car - I thought the V4 was only available in the Deluxe trim for ‘67, but apparently it was available in Standard trim as well.
Radial tires were only available on the V4 cars in ‘67, and as a $60 option - in today’s money that’s like a $400 upcharge.