I guess i didn't emphasize that if interested to contact me directly, so I'd havery one in one file in my addy book Sorry about that. reutling@embarqmail.com
Ed R. IF you have the AMT Tractor N Trailor series kits, the atlas O Trailer wheels for rear tandems will do just fine. I have purchased several AMT 1:43 TNT Trailers and see that atlas O trailer wheels with htese kits makes the TNT kits close in dimentions to the atlas O trailers.
As far as the Tractors, The front steering wheels are the issue for me. I have a KW as well as a P built COE but need 1:43 wheels.