Gearbox ID please,

I have a NEW single rail ford box in my garage, Detachable bellhousing, type3?? but what is it for, can it be worked out from the part numbers.
Pn 74 BT HA OB 8D 10, or IO,
Can somebody decypher the numbers for me,
Ta very much
Ian
http://i168.photobucket.com/albums/u...Picture066.jpg

http://i168.photobucket.com/albums/u...Picture067.jpg

hi mate , looks like a 1600cc pinto gearbox, not sure on the numbers, hope this helps, cheers lea.

I would say it's for post Dec. 1973 production Capri with 1600 pinto and speedo gears matched for 3.75 CWP