I have an idea to take a Dummy FA Unit and swap bodies with a Powered FA unit with tethers and all. The powered unit is just motor, tether couplers etc.
How difficult would it be to do this sort of work? That way I think it will be two powered A units instead of one power, one dummy.
A second question would be related. Any powered B unit chassis? Or did MTH make sure that no B units are available for power?