I am not near my COE but the setup is the same as for the standard cab. See Jim Carter (oldchevytrucks.com) and look at his part #s MEG108 for the shutoff valve and ME456 for the flex hose.
Kent


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