Posted by Chriscase on Tuesday, May 12, 2009 at 10:04:23 :
In Reply to: Googled, found this... Re: Looks like a Tulsa design? posted by Bob Stopka in Panama City on Tuesday, May 12, 2009 at 01:27:17 :
I've seen that split case design on tow trucks. Pretty popular. The inspection plate is not.
I'd guess that yours are almost modern, what with the stamped and punched bracketry. 60-80s perhaps? APC maybe?
Maybe try to find a number decoding page in a Tulsa catalog? Or try using a Braden decode- they are both the same company, owned by Paccar, who also makes Peterbilt and Freightliner, owned by Gobernment Motors?