Replacing mirrors

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Loww

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Germany
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Dominic
Truck Year
1979
Truck Model
GMC K20
Engine Size
350
Hi all,

I want to replace the large mirrors on my '79 K20 with the smaller ones. Do I have to drill new holes or can I use some of the existing holes. Do I have to modify anything else?

Thanks!

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75gmck25

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Northern Virginia
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Bruce
Truck Year
1975
Truck Model
K25 Camper Special TH350 NP203
Engine Size
5.7
I made that switch, and you will have to drill new holes. I was able to find a set from LMC that provided a wide angle mirror for the right side. However, the chrome has not held up well over the years, so they don't appear to be the best quality.

Bruce
 

Shorty81

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Darren
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86
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Thanks Bruce! What did you do to cover up the holes of the original mirror?
To do it right you need to weld them shut. IMO, I would leave the existing mirrors on.
 

Craig 85

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Craig
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1985
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K30 SRW
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454/TH-400/NP205
If you are going to switch to the D45 mirrors, you also need the support bracket that goes in the door. LMC # 38-5883. I recently bought the stainless mirror heads. I figured they would last better than chrome. The hardware that come in the kit sucks. You need to buy 4 of the barrel nuts seen on the upper left of the link.

http://www.lmctruck.com/icatalog/cc/full.aspx?Page=67
 

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