Motor Wheel Corp. made wheels for many manufacturers and the aftermarket.
The '76 Chrysler Corp. (5 on 4.5" - 15x6'0") version was part # 3736951, pretty sure this is a light truck/van wheel, it does not appear passenger cars used that size.
Not sure if trucks used a "JJ" profile rim. It could be a trailer wheel.


any "always" or "never" thinking is usually flawed.