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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!
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| | | | Joined: Sep 2003 Posts: 343 Member | | Member Joined: Sep 2003 Posts: 343 | The factory assembly manual does have specifications for cab height off the frame rails. I would make sure that the cab height is within spec and then adjust the holes in the floor boards as necessary. I am in the process of installing after market floor boards in my truck and they definitely need to be modified to make them work correctly. I had to drill many holes and add metal in other areas, but I have not even tried to see how the pedals are going to fit yet.
1954 GMC 1/2-ton Longbed
1971 Pontiac LeMans Sport
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