These are the seats I am going to install someday. I found a set at a local salvage yard for $150. I was told that the driver's side had a small tear in it. They had several sets for under $500. Run a search on
http://www.car-parts.com. This seat style is in all Chevy/GMC trucks since '99.
What kind of leg room is left (at 140 lbs I bet plenty)? Is the tank still in the cab or is it relocated?
Thanks for sharing.