help to order right parts

[final flight]

hi guys, will be ordering a new autopilot for the blue bubble. would like to have someone that has installed one on a teleflex rack system help me to get it right the first time. this is a 16 ft. with a 50 hp. 4-stroke. so if you can give me a list of part numbers and a good supplier i'll give you all the praise!! thanks in advance rollie