[FC] Engine Disassembly continued

[Geoffrey Johnson]

Before getting Harry all worried about mismatched parts....
I have seen several  cases out of '63's with matching halves where one 
side had the reliefs and the other did not.  The original out of my '63 
was that way, still have the case.

Notice the half that shows the reliefs does not have the three indicative 
ribs of a late case.

http://picasaweb.google.com/HarrySmith1957/PhoneCo1963CorvairRampside#5538081538333385314

Check the parts over as you never know what may have happened, but I would 
be willing to bet it is original.