I have a RPM T56 that is faceplates and want to put one in my C6. I don't go on the forums much anymore and wonder who is the best person to get it from.

 

I haven't bought one from them, but Tick Performance has billet faceplates for T56 and TR6060 transmissions. I've bought clutches, transmissions, and master cylinders from them before. Ended up that the guy that came and helped do initial setup for our CNC at work, helped do initial setup for their shop as well - I didn't realize they were doing their own in house design and fab until then.

This looks like the link to the C6 TR6060 faceplate https://www.tickperformance.com/corv...transmissions/
I would probably call them and order it over the phone, in case you have questions about the options.