Dave:
I did a google for M108 wrecker & got a decent number of hits, some with photos, although don't get your heart to thumpin' yet ....
Note the M108 was really a "crane" for materiel handling, not a "Wrecker/Recovery" because it had no rear winch. The M60 was the 2-1/2 wrecker. If it will help, they both used the same crane assembly, so M60 pix would be equally helpful ....
You might be able to get the TM's from Portrayal Press, or here is another site I found:
http://www.manualstore.de/html/CDM35DEUCEV100.htmlI checked on the Army.mil reference list but they have no deuce-and-a-half manuals anymore.
John