Drove my 63 for about 10 miles and roasted both rear brakes. Probably within minutes of a fire. Lots of smoke etc. I assumed it was a stuck e-brake so I trailered it home. Absolutely no friction, and was able to freely spin the hub. Couple of taps on the drum and they popped right off. E-brake is working fine. Now, in the interest of full disclosure, this is the first time I have ever had the wheels off since I bought it and wow did I find a mess. It has a 5 lug conversion and what appears to be the original 4 lug drums re-drilled. One drum has 10 holes and the other has 11. Horrible!!!!! The lower return springs were upside down which was interfering with the auto adjustment gear so that wasn’t working. It appears the shoes were well away from the drum. I’m stumped on what was rubbing to get so hot. There’s more. I got no brake fade. Brakes are hard as a rock. Press on the pedal, not even a wiggle. So the questions are, any ideas why the original event happened. Can the extreme heat destroy the wheel cylinders so they are destroyed and now don’t work? And what new drums to get. I have no idea what rear end I have after the conversion. The drums I have are 9” X 2.25”, but I can’t find any data on that size. Are they really 2” and I don’t know where to actually measure. Thanks for the help.