Hello, finally got tired of wrenching my neck to the hard right, lol, my 70 road runner didn't have passenger door mirror, finally decided to buy/mount one, does it mount same location as driver side? measurement wise? I was going to remove drivers mirror, measure mounting screw hole from front door edge and top of door edge and put hole in passenger same location if that was where it is located? 2) drivers and passenger mirrors are the same, yes? lastly best quality supplier? pentstar not essential. thank you for any help/direction. Darren