Part info help needed

[Bill Kelly <kelly@dss.com>]

Does anybody have a Spitfire Spare Parts Catalog handy?

I need some info on when certain changes were made inside the
differential. The part in question is the Inner Axle Shaft Assembly.

I need to know how many different versions of this were made for the
"FC" range of diffs, and what the cutover serial numbers were.

Thanks in advance,

Bill