Tom, I had heard of Testa Rossas, but didn't know there were different numerical designations within the model.
Here's another unidentified Hot Wheels. It is marked Malaysia, 1987. Sure looks like some model of Porsche to me, and it sports a simulated rear engine. The casting seems rather crude compared to other Hot Wheels cars. See above the front bumper in the first photo and over the rear wheel and windows in the second.