My 54 GMC had a jack mounting bracket mounted on PS inner fender in the engine compartment, but no jack. The picture in the link below shows the bracket I am writing about between the heater hoses and the starter:

http://community.webshots.com/photo/109150147/109004142yqxpUp


1954 GMC 1/2-ton Longbed
1971 Pontiac LeMans Sport