The front bumper on this crew cab might be a tad too big!
http://cgi.ebay.com/ebaymotors/1983-GMC-CrewCab-Crew-Cab-4x4-Dually_W0QQitemZ4624964958QQcategoryZ90982QQrdZ1QQcmdZViewItem
http://cgi.ebay.com/ebaymotors/1983-GMC-CrewCab-Crew-Cab-4x4-Dually_W0QQitemZ4624964958QQcategoryZ90982QQrdZ1QQcmdZViewItem

Whatever it is, at least it has a custom stereo.