If you ever want a very nice drill go makita. My 18v Liion Makita is to say the least awesome. Very light compared to the old Nimh battery types and crazy power. It was $450 though. Sad fact is you could probably by the same drill at you home depot or whatever you have over there in the US for half that.

I'm not sure where you would get a motor like that though sorry. Only thing I could find on ebay where they tamiya/Johnson 540s. They don't have the torque ring and I have no idea if they are the same wind? Looking at the Johnson website though the ones that a rebadged as tamiya seem to be high RPM low torque. Not exactly you want in a drill.

Kieren