This is what seems to have happened in Bulgaria, where a teen racer decided that he must place a 5.0 liter V10 engine (the one from the outgoing BMW M5) under the hood of a BMW Z3 coupe ...

That's what this BMW Z3 M Coupe owner from South Africa thought, but since these cars are becoming a bit of a collector's item, he decided not to mess with its original engine and transmission pair.