Need help with 51 box on s-10

[gregw98]

Guys, the information that you are posting is invaluable. I am building my first S10 framed early Chevy truck. I have been following several builds and I am at about the same stage of progress. Mine is a 54 half ton 5 window going on a 84 single cab, long bed. Kind of doing this as it fits and see that it is basically open as to how you mount your cab and fenders. My cab is mount 24 1/2 inch from the bottom floor seam to the front shock upper post. Chugging along.