For either "Movin' On" truck, you need to use the Revell of Germany cab as it's the post 1973 W900 cab mated to the AMT W900 hood. (The AMT kit is a 1968-72 W900, while the Revell of Germany kit is a 1973-1982 W900.) Also, the truck in the show had a Kenworth tandem torsion bar suspension (available from either the AMT kit or from Porky). As far as the engine, one of the filming trucks had a Cummins NTC350 while the "actual" truck had a Cummins VT903 (available from Auslowe).