Yeah, after posting on reddit as well as nerfhaven, I'm going with a triple Hellcat setup in my rapidstrike, ordered them 2 days ago.
The motors don't really protrude too far through the shell. You could patch the holes with some styrene if you don't have access to a 3d printer.
Luckily, I do have access to one, however I haven't found any stl files of 180 motor covers for the flywheels and pusher.
Quick pre build question, how do 180 motors stay in the cage? Stock cage doesn't seem to have the holes for screws that aftermarket ones do.