flux motor mount doubt

I have a Neu 1515 finned can, and it will not fit the flux mounts due to the fins, screws in the endbell and the wires... I know there are notches for the screws, but they do not line up. I have used the FLM motor mount from their Chassis kit, and will be ordering another one for the FLM truck (which is still not running btw -lmao-)

hang on... or is it 1512?? The one i have is the same size can as the flux motor etc etc - the neus confuse me -lol-