I have doubts too. I wrote about it in https://www.eaglersnest.com/forum/index.php?topic=1523.15 . But it looks like it is possible.
BTW The engine from the film is about 58-60lbs heavier than mine.
10-4...
He was running the Rotax C gearbox and no telling what flywheel --probably stock.
I am not familiar with the differences of the different model engines.
If you would like to email him send me a PM, he gave me his permission...
He had success with the BMW and may have info you can use.
(https://media3.giphy.com/media/1wnlpoUzrMGze/200w.gif#35-grid1)