Exciting to see Dynon Avionics start to get STCs for certified aircraft. I am not sure if it was a mis-statement or correct, but in the link below if you look at the video link at the bottom and watch the video on Dynon and EAA teaming up, Jack Pelton specifically talks about STCs for C172, PA-28, and... PA-30! Maybe a mis-statement but if not available now perhaps soon...
http://www.avweb.com/avwebflash/news/Ex ... 994-1.html
UPDATE: I think Pelton may have misspoke... other documents say PA-38 (Tomahawk).