great pics. Yes it funny to see the vette and the El Camino as the tow rigs chosen for the brochure. Back in the day many guys towed their hydros and flattys with "brady-bunch" looking station wagons.
My dad used to tow the 21' daycruiser (Omega) with a 73' vette, 454 4 speed. I guess it wasn't so uncommon but can't imagine towing my daytona w my m coupe!