Chris,
Here are links to four pictures from my 50 Chevy COE. The pictures start with the firewall where you can see the clutch pedal bumper and progress to the adjustment nut on the clutch fork,the last 3 photos taken from underneath the truck. I am hoping you can orient yourself by other recognizable parts. Good luck and let me know if I can help further.

Kent

http://s1116.photobucket.com/user/1950Cabover/media/IMG_1474_zpsdk9ux7to.jpg.html?sort=3&o=1

http://s1116.photobucket.com/user/1950Cabover/media/IMG_1472_zpsshfpapra.jpg.html?sort=3&o=2

http://s1116.photobucket.com/user/1950Cabover/media/IMG_1471_zpstxwhc2m7.jpg.html?sort=3&o=3

http://s1116.photobucket.com/user/1950Cabover/media/IMG_1470_zpsn2ihygig.jpg.html?sort=3&o=4

1937 Chevy 1/2 ton
1942 Chevy 1/2 ton
1947 Diamond T Model 509
1951 Chevy 1/2 ton
1950 Chevy COE Model 5700 ~ "Barney" ~ And more pix