Dave,
    You said it has reinforcing ribs?  If they are reather profound, like an 
Austin Healey Sprite ribcage gearbox, then it is from a Series 6 Minx.  I did 
not know anything was dimentionally different with them, except they will not 
fit in earlier Audax cars like a Series 2 Husky: the ribs interfere with the 
junction between the firewall and the transmission tunnel.  I have forwarded 
your question to the Hillman list.
Jim Leach   Pacific Tiger Club  Seattle 
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