I don't know what practical is to you, but it would be a waste of a good powertrain, waste of your money, time and efforts if the chassis being used is crap. By stating that, I do not intend to claim the KP60 being a bad car. It is a good car but has it's limits. Get a KE70 or a Daihatsu Charmant in an acceptable condition, build it off mildly and stick in whatever motor you wish. That would be more rewarding, more fun and would double as a daily too.