How much is the wheel kit? MTH charged me 20 bucks for the pilot. Their cost I am sure is only a few bucks. A fixed rear pilot will require a larger radius than a swinging pilot. Even with large flanges many with smaller layouts would not be able to run this engine not to mention most do not want to switch to scale couplers.
FWIW 4141 is a two rail engine with pickup rollers installed.
Pete