got a gearbox here but cant figure out what it is! - help?

[sackmcgannay]

Just taken out a gearbox fitted to my 1600 tp engine....looking to put a 1303s AT code box in for better mpgon motorway runs....need to find out some info on the old gearbox though
the code is : C012 1728
part no: 002301103

i have done a search and looked through gearbox code lists but cant find a C0 code?
any help much appreciated

 

[VeeDubMan]

How many ribs does it have?

 

[67westy]

Standard 1600 box, I had a thread about them as I couldn't find anything either!

http://forum.earlybay.com/viewtopic.php?f=4&t=40872" onclick="window.open(this.href);return false;