If you enjoy buying and scrapping a car and then switch the engine over to your own car and then do it all over again!
What will happen??
For me it was like this.
1988 bmw 320i im 12 valve(129hp) turn into a 320 m52 2,0 150hp :-) (2012)
later, the same car turned into a 328im M52 2,8 193hp 280nm :-) (2014)
picture from 2009