These do appear to be one piece castings. Looking only at the pictures on the several vendors' websites it looked like all of them were cast (for 1949 front drums) when I was looking. Not sure if they all come from a single source as other parts seem to or not.
Looks like the hubs do pilot on the drums with around 0.005" slop so I am convinced the wheel stud length is not a huge issue (Thanks Bill). The hub I was looking at has a much larger chamfer where the wheel studs press in (looks like a previous owner took a countersink tool to it- who knows why) and has less engagement on the wheel stud shoulder. The wheel stud shoulder presses into the other hub (which appears to be stock) around 0.025" which seems to be plenty to hold it onto the drum.
Last edited by 1866yellowboy; 09/14/2015 4:10 AM.
