I second TwoTone. I removed my original riser, welded in a 1” riser on the floor and bolted down a 1990 GMC Sierra bench seat using its pedestal. As mentioned, it sits just below the rear window, moves you back and down a lot, gives ample head room, and you can use the stock tank. I have had my bro in law and a buddy (both 6’3”) get in and they can’t believe that it has as much room as it does. I’m 6’ and it is the perfect “hang my elbow out the window and cruise height”. It does fill the cab from door to door with about 3/8” between the door and bench seat side, but I can overlook that. It’s not modern comfortable but the steering wheel isn’t in your stomach, you’re not pushed forward, and you can lean back and relax. Plus, the seat folds forward for access behind the seat. It’s been a great choice in my mind. I’m doing it again on the 1/2 ton project.
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Last edited by Fox; 01/11/2021 5:27 AM.

1970 Chevrolet C10
Grandpa's -- My first truck -- In progress to shiny
Follow the build in the Project Journal
1950 Chevrolet 1-Ton Dually
"Ole Red Girl"
In the Stovebolt Gallery
More pictures here
1951 GMC 9430 1 ton dually--Shiny! | 1972 Chevrolet C20- Rusty- the puzzle box lid for the C10 | 1962 AMC Rambler American- my wife's
Parts trucks-
1951 GMC 9300 | 1951-GMC 9430 | 1951- Chevrolet 1300