Traxxas Slash motor choice question

[rootar]

yes your battery will fit no problem i know 165mm batteries even fit, and id go ahead and get an L can if you get a feagio, i really like my 9L on 3s, gear it for 45mph and no temp problems and runs like a bat out of hell. the medusa 50 is also a good choice just make sure you dont get a motor with too high a KV as gearing down is somewhat limited.