There is a 6-18373 S2 with TMCC on my railroad that needs upgrading to run as well as the DCS locomotives on my railroad. My preference is to have a later version of PS 2 put into the S2, but there is a concern that the PS 2 electronics may be too tight a fit. I would like to hear the experience of anyone who has put PS 2 into Lionel's 6-18373 S2.
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