How do add an engine to the 200bx?

I'm trying to add an engine to the 200BX, but every time I do so, the car doesn't spawn in the game.

I have the code I'm using for the engine file right here. Can someone please tell me what I'm doing wrong?
This formula seems to work for every other car, but for some reason doesn't work with the 200BX.

Help is really appreciated.

 

you need to remove anything that isn't your modified engine, as it overwrites official parts.