KJ, have you considered a 1/32 scale line of wheels & tires to replace the ones that come in the Revell USA snap kits? For wheels I was thinking of 6-spoke Mack wheels (front & rear) for the CF600 & R600; 10, 5, & 2 hole wheels for the Ford AeroMax & Kenworth T600; 5-spoke & 2 hole trailer wheels for the tank trailer that comes with the R600. Isn't there a Freightliner, too? There are also the AMT 1/32 kits that are out there, and their wheels & tires are too small.
Just an idea.