Yeah looks like you're right there Gord.
Still I think 21.5T brushless might end up being the Saturn equivalent. I might buy one to perform this experiment. There's a nice looking motor here:
http://www.ebay.co.uk/itm/Speed-Pass...item2a17b17a76
Which is a decent price. Should be somewhere around 1800kV which gives an added Mardave bonus - getting the gearing right is going to be much easier. With 3000kV on 2S I am running the smallest pinion I can fit and 75T spur and in reality my car is still over geared. The motor can't get any closer to the axle. Pretty sure most of us are up against this. With a 21.5T something more like 26-70 might be suitable which is a much more comfortable ratio in the car. Also smaller spur = smaller diameter tyres possible which will be better for stopping roll-overs of course.