-It mounts the same way as your stock alternator. -You may need to trim your fan blade or the bolt (stud) that holds the pulley onto the alternator. -It is internally regulated so you will have to reroute the blue wire wire if you want your dash warning light to work correctly. I just used a short 2 inch jump wire from the alternator terminal (can't remember which post, D+ maybe) to the blue terminal of the stock plastic plug of the stock alternator. -I do believe the 79-81 alternator produces 65amps -I don't think it has solid bushings you can get them through specialty shops though. -make sure you ground it like the stock one