Location of blend door actuator on a prostar?

[RTRUCKING48]

Ok thank you my fellow forum members Nilao,8042,Waterloo for the great info I will be on the works to change em all at once, the guy at the stealer was all confused I guess when I told him that the one he was giving me wasn't the one I was looking for and he also told me that was only one for that truck which I didn't believe because of the big cab on this prostars it's always good to get second opinions right? Thanks a lot guys have a nice weekend!!!