The problem Norm is that green Mustang would cost well over a grand in today's money and people aren't prepared to spend that level for a mower for life.

I'm sure if they'd offered four stroke mowers for $30 that would last a year or two there would be plenty of takers in the mid 70s world.
Today if you want a mower for a decade plus, you get a Honda OHV.

Ahh, if only victa had kept producing the thumblatch catcher series, they would be in better shape today!