hi all new to forums. got my hand on a 2003 gator 4x4 buddy says the engine is seized up. now im wondering what shaft is on the motor from john deere. would I be able to somehow fit an air cooled harbor freight special to the current drive system? I haven't got a chance to look at the motor at all and need reference before I start spending money. option 2 would be to rebuild it but sadly i cant find any parts online anywhere. a little info would be much appreciated. thanks!