Interior Cab Dimebsions
 

This is a peculiar dimension to need but I'm wondering if the dimensions between the cab door jambs (behind the seat) varies between models such as the 10, 20 and 30's on our trucks. Measuring from steel to steel inside the cab, mine is close to 65.5 inches.

I am also wondering if these is much variance in floor configuration behind the seat where the fuel tank goes and if there's a height difference from the floor to the tank mounting nodes at the rear window.

Re: Interior Cab Dimebsions
 

My 72 k10 is 65 wide and 19 1/4 to center gas tank mounting hole.

Re: Interior Cab Dimebsions
 

Thank you for that information. The photos I posted are inside a 70 C 30. So it appears the inside cab width is close to being tha same on 70's k and c models.

Re: Interior Cab Dimebsions
 

I think that some models may not have the upper tank mount nodes that protrude from the back of the cab just below the window. I don't know if that is correct or if that applies only to those models and years which never had an in-cab tank