Anyone know how to break-down the ID numbers on a transfercase?


I'm thinking (hoping) its a 300, but want to verify.

I found it for sale, but before I buy, I want to make sure its a 300.

numbers on transfercase: 300-772-7 421-764091

year is unknown and is behind a 727

Aluminum rear output housing and passenger side speedo cable input are dead give aways. They were only offered in 1980 so your chances are slim to begin with.

thanks for the help. finally got pics and it is a D20. steel rear output with driver's side speedo cable.