I think a firewall mount and hanging pedals will be a must. After looking at the area the original pedals will occupy I don't think I will have the travel space required to operate the brake pedal without hitting the exhaust manifold, Nor is there much room under the cab for a Master cylinder, booster and clutch reservoir combo with the new transmission crossmember installed.

http://i1062.photobucket.com/albums...7-49AE-B935-CF44981D16ED_zpsun0hff6f.jpg

http://i1062.photobucket.com/albums...2-46EA-B15F-5485D87E103D_zpsatwjtr9v.jpg

1949-52 Chevy 3800 1-Ton Flatbed
In the Stovebolt Gallery
More pix on Photobucket