My last Slot It Porsche, another 956C. This was actually the first Slot It car I ever bought. This car cost me less then £16 brand new in a model shop bargain bin. I was surprised at the price.
Specs for this model is a heroe quest to find(long, width, height) as there are almost no data available in the web😅
Probably all three axles are coupled together to improve traction; that’s why all the wheel nuts align…..😸Methinks photoshoppery is at work looking at the wheel nuts on all three wheels in exactly the same position.
The Airfix/MRRC Porsche 906 is about 52mm wide. A Scalextric BMW Mini chassis (sidewinder) just fits under it if you don’t mind keeping the narrow wheels.The width converts to about 52.5 mm. This is the scale discussion again.
If you want to fit the Fly car, you are about 10% over width, as mine measures 57mm. But a SW won't fit under a 52mm wide body.