Thanks, guys, I appreciate the comments.
The orange & white GMC was painted by a friend of mine for me. I can't paint that well! I was going for the factory fresh look for an O/O. It has steerable front axle; fifth wheel release handle; 1976 New York license plate;, custom GMC mud flaps; KFS P/E stacks; aluminum horns; steel deck screen; and the rear suspension, 1/4 fenders, & wheels from the AMT GMC General.
The Chevrolet is basically box-stock but I did use the horns from the Revell snap KW (or was it the Peterbilt?), door decals are from the AMT International 4300, fifth wheel release handle, mudflap decals from JBot, and a second exhaust stack from the GMC Astro.