After studying the photos going back and forth I am going to say the trucks are probably the same, IMHO there are too many similarities in the car hauling ramps and support. Even if they are different they are at different time periods for Yenko orders.
The first photo B&W includes one of each color from the first 50 X66 coded cars 10 each DY HO LB FG OG. PLUS a Garet Red or Fathom Green Yenko Nova. The one on the truck is a Daytona Yellow X66 - yellow rockers and gill trim. I have wondered aloud in Dave Beem's presence if this may be his car, which is one of the first 10 DY cars plus his was transferred by truck in the winter to Gates, Indiana and his also has yellow rockers, one of the other X66 DY yenkos has black rockers (the yet to be found much photographed drag car)
The 2nd photo has the DY chevelle and a couple of X11 cars (gill trim and wheel opening moldings are visible on the Fathom green and hugger orange cars plus the HO car has blacked out rockers.)
On the bottom row looks like a Lemans Blue Yenko Nova with dog dishes & redlines.
Does anyone know when the orders for the first Chevelles were placed?