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Click on image for the lowdown. 
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| | | Forums66 Topics128,078 Posts1,056,049 Members48,433 | | Most Online14,466 Apr 26th, 2026 | | AD Chevy Trucks Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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For helping keep this great
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on the Internet for over 30 years! and not clogged down with Ads! Again, thanks! | | | | Joined: Sep 2006 Posts: 3,596 'Bolter | | 'Bolter Joined: Sep 2006 Posts: 3,596 | This may help for a 3100. The sill closest to the cab has holes along the side that bolt it to the front panel, it has the plates. Next two sills are the same, they have the plates (see correct response in next post). Next is the rear and it is an assembly without the plates as it has welded brackets that save the same purpose. Look closely at these pictures hopefully that will clarify it for you. https://www.flickr.com/photos/advance-design_parts_co/albums/72157631884205225/with/8130516066/
Last edited by Brad Allen; 08/16/2018 3:33 AM.
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