I have an SMR engine that was converted to TMCC via the ERR kit. I also have a PS 2 upgrade to another SMR engine. I also went the Proto 2 mod for my Kline Tank, Hudson, F3 (AA), and a light pacific. I have not had any issue replacing on command system into another. The electronics are becoming sufficiently small that the almost any command system can be fitted into engines from all vendors.
|