Sure. But GE don't make "737MAX8 engines" specifically. They make the range of engines they have, and Boeing (and Airbus and Bombadier et al.) get to choose wh

Sure. But GE don't make "737MAX8 engines" specifically. They make the range of engines they have, and Boeing (and Airbus and Bombadier et al.) get to choose which one they want, given the constraints of their aircraft. You _could_ fit a 500cu inch big block V8 into a Miata. Bit it's not gonna handle the same as it does with a 2L 4 cylinder in it, and it's gonna stick out the bonnet.