I popped open one of my Rapido CN GMD-1s to see what space there was for a RailPro module. Looks like if I cut down the iPhone speaker, I can get a module in. These are on the "eventually" list (I have waay too many CP units to do first). As soon as I figure out the right picture size, I'll post a picture of what's under the hood for the rest of the group.
