998/999 trans

Look on the side of the trans, above where the pan goes and there should be a series of numbers that you then find on the posted page. If its a 999 it will have a low first and second gear set.

And I think they became available in the mid to late 70s, Because I have a 999 in my dart, it came out of an 81 pickup, and the code on the side confirmed that it is indeed a 999, only problem is thats its a lockup trans...

Externally I dont know if they are much difference between a 904/998/999.