mirror help

[ctucker]

Guys excuse me if it already on here somewhere but I need a little help finding out what kind of stock mirriors were on my truck. It a 71 chevy fleetside 350 with a/c Im not sure what info you need if you look at my pictures you see one hole right below the vent window and two just below the upper trim. Im thinking it had the huge mirriors on it any opinions or knowledge would be greatly appreciated or if those lower holes do not goto mirriors what they are used for. and where to pick up a set?

here is the link to the truck I havent figured out how to put them in the post yet. you can see the holes on picture P4070129-1.jpg thanks guys

http://s64.photobucket.com/albums/h1...ker/71%20c-10/