I have a 1954 Chevy 3100 truck. Have been working to restore the truck during the last few years. Since the purchase of truck there was a front brake drums question I have had. It appears that prior owner replaced the front drums with a five lug drum. The replacement has been working fine. While inspecting the brakes they seem to be original 54 according to my review of 54 repair manual and what's available on line and what’s currently in place on the truck. My question is are the 54 drums interchangeable in this way between 5 and 6 lug configurations? Is there an advantage to 5 lug over 6 lug drums and are the rear drums also interchangeable? Thanks!