Hello All - Sorry for the newbie question. I just purchased the T-34C Mentor by JRollon and I have to say it's by far my favorite plane. Wonderful detail and the flight model seems to be good. The only thing I would like to add is an HSI w/ DME and a S-TEC 55 autopilot. Is this possible to do with a purchased plane? If anyone knows I would really appreciate a reply. Thank you!