[Vintage-race] Leeson gearbox parts

[DRR]

I need some parts for a Leeson gearbox.  This gearbox is one which would 
be compatible with a Lotus Elan, Super Seven, or any other car using an 
English Ford Cortina based 116E or similar front engine.

In particular, I am looking for a first motion shaft and possibly some 
other parts for my Leeson gearbox.  Apparently Leeson is no longer in 
business.  Any thoughts on where I might obtain such parts.  I have 
already tried Dave Bean.

Thanks for any help that may be out there.

Dick Rothman
Denver, Colorado