I have done factory air and red dots...and have been asked to do this same conversion, I declined, due in part that the customer would be paying for me to learn. Attached to that condensor is the dryer, a harness runs to the Evap unit in the passenger compartment where the old heater core and blower is now. It could be done...I guess, you would need to fabricate up your lines of course to feed the unit. The right fender is where the condensor goes for a 2 man truck, for a 4 man it gets one in each fender well, the left fender well is for the rear compartment...but wouldn't make a diff for a red dot setup....I would go with the left side.
you will need to cut the fender for the intake and screen...and you will need the special bracket for mounting it, it's not included with those units.