Only one problem with that Steve,and that is the shaft size.The shaft on these little 1/18th motors is only 2mm,and you'll be hard pushed to mount a Mardave pinion onto there,without it being off-centre.
OOPs sorry,I see that the Novak is a 3.18mm shaft rather than the Ezrun motors which are 2mm. It's true that you could fit it in a Dave,but it's not designed to push a kilogramme weight around a track,not without causing serious heat problems.