I might be interested, depending. Please supply type of engine (you say 6 cyl Cummins; for that year answers might include 6CTA, 6BTA, 5.9, or 8.3). Please supply transmission make/model (almost certainly Allison; model is important). Lots more pictures, please!
You say "stranded" in CO. Is this due to your health, or some mechanical breakdown?
And, you'll get more eyeballs if you post this in "Classifieds".
Edit: in looking at the pictures while enlarged, I see that it's a front engine rig, so I'm not all that interested. Other folk will be though, so keep those pics and stats coming! And, btw, Welcome! We wish it were under better circumstances.