Tomix JR 321 Commuter Train (Tomix 92358) DCC conversion?

[chadbag]

Anyone converted this Tomix commuter?  This is the second edition of the JR 321.    I have the KATO version, but cannot find the expansion set and figured you cam never have two many commuter lines.  The 321 runs multiple sets on several lines in the Osaka area.  I'm interested in picking up the basic set of this Tomix but wanted to know if anyone had converted it to DCC or at least has a picture of the power car so I can see how easy it is.  I suspect it is not that hard.