I dont know if the vent itself is the same but when i was building my 34 all of the mechanism, handle brackets etc for the vent came off of a 35/36 pickup and it bolted on. I think the vent is even the same but i didn't need that part so i didn't try it.
33 and 34's are not the same. A 34 makes room for the screen. I'd bet the 35 pickup is the same as a 34 passenger.