Help for lionel bullet 238E Steamer

i am trying to find what type of motor from any other lionel steamer might fit into a lionel 238E steamer shell?. It was produced between1936-1938 and the wheel arrangment is 4-4-2. i purchased a nice shell and want to get it running.
Please email me
thanks
rich
richardsushi
trainman72899@aol.com