This is my version of dummy chassis for mini-z printable without supports. Ajustable from 86 to 98mm. Can be mounted in original Kyosho display box.
In the files you find adapter only for RWD wheels. I not made one for AWD yet.

You will need:

4pcs m2 x 18mm screws to hold the wheels.
4pcs m2 x 5mm screws to hold frony clip and rear pod.
Some glue or acetone if you print this from abs.

Some post processing may be required.