Engine/Transmission (1994 - 1998) Which pump do I have?

[MSanford]

This is probably a dumb question but I recently purchased my first 12 valver and I keep reading about 165, 215 pumps and what not. I am trying to figure out which one I have. The truck is a 96 ctd 1 ton dually.

 

[MSanford]

Forgot to mention that it has an auto transmission as well. 4x4

 

[Joe G.]

You should have the 180. Check the data plate on your gear case just in front of the injection pump to make sure.