Having passed on 3 Bonnie Converts over the years.
All 4-speed.
My friend that ownes a Junk yard also Parted another.
I'd say that they were produced in the hundreds. Not just a dozen. Oh, 2 of the 4 were HO cars also.
Usually I'm found working on my Pontiac. If you want to find me Look for the white picket fence and all the old Pontiacs parked outside. And the half dissembled engine sprawled all over the driveway!