in my country (Poland) is class name "540" where we are riding with saturn or excel motor (20 turns). These motors have "big" front and when we want put them into T2'009 or another similar xray chassis we must cut these big front (sorry for my bad English). It's very uncomfortable while competitions and everybody have problems with that. You can make optional motor mount for these types of motors. I think a lot of people will buy it.
And really do something with servo mount!!
P.S. Awesome cars
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orange rulez