Kyosho 4wd

[Mattyb6]

I recently dug out a kyosho 4wd car which I've had for probably 15 years, how can I tell what model it is. I don't have a bodyshell or wing, but I think it's an optima. It has a carbon type chassis and it takes saddle batteries. I remember last time I tried to use it, I didn't have wheels that fit, as the hexes were different size to my modern wheels. Do the vintage cars still work with modern electrics, I don't want to ruin it by sticking lipo and a brushless motor in it.