Unknown Hong Kong Diecast Dune Buggies.

Approx 5 inch long dune buggies. Early 70's ? Wheels look like oversized Playart style. Name is blocked under motor. Collected them because I had some as a kid back in the day, and 95 percent of my toys were given away when I progressed to real cars. I think these were probably in the inexpensive aisle at Kmart, etc. But were great fun regardless. Posted on a few top facebook toy pages, and some guesses on maker, but no confirmation. I am sure someone on CW will know.