If adding a right side rear view mirror where GM did not provide mounting hardware(my ‘55), it is easy to make a nut plate with machine screws rather than using sheet metal screws, even though the tin is two layers thick in places. This will provide a secure mount that may be used several times without distorting the mounting surface. Make sure to get a buddy to properly locate the mirror fore and aft, will not necessarily line up with the driver’s mirror.

Ed
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Last edited by Gdads51; 12/08/2024 11:05 PM. Reason: add detail to title
'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
'55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.