I need both front and rear passenger doors to repair my 2018 M3 Grand Touring (hatchback). I found a donor ar but it is a 2016, body style is the same. BUT... MAZDA shows different part numbers on the 2016 vs the 2018, but they cannot tell me what if anything at all is different. Can anyone here tell me if the 2016 doors will fit my 2018? AND? what if anything is different ?