.. Sorry, I dont mean to confuse you guys..
Truly, Im the one that very confusing now.
My first delivery of MAX .12 engines was around agt/sept, I personally check that the engine was RS12 based. But Im sure that I could be wrong. There are some other delivery after that but I never check it again. Untill the model came up.
And I got those statement from our vendor.
Im going to clarify this thing with my vendor (I run small LHS here)