Top: 3054 Converted to MFX with a mSD/3 decoder. Bottom: 37502 Upgraded from MM2 to MFX3477 Zepplin. Converted to MFX with a mSD/3 decoder and added strip LED lighting.3720 VT32. Converted from MM2 to MFX with a mSD/3 decoder3604 BR 80. Converted to MFX with a mSD/3 decoder, with added TELEX couplings either end.