MGA crankshaft #'s correction

[MIKE HIRSCHMAN <MHIRSCH1@FAIRVIEW.ORG>]

Sorry for the confusion with the parts numbers.
My MGA crankshaft has had the casting number (12H449A)
partially removed.  A new number (12H166) was hand stamped
onto the crank.  The MGA factory parts book lists 12H165 as a
proper part for the MGA 1600.  Any thoughts ?
Is it possible that the PO used a 1622 crank in a 1600 block ?  If
so.....how can I tell the difference between a MGA 1600 and a
1622 crankshaft?   Thanks  Mike