When I did my model, I did not see a Revell model delivery. I had to buy a regular SSR model and then buy the delivery body separately from Jimmy Flintstone. Jimmy makes his own molds and sells body’s only. I just checked E-Bay and see Jimmy has a Drag SSR body now. The E-Bay sight went down on me before I could link you to his delivery body. I will link it when I can get back in. The delivery body has been around since 2008. Note: Drag truck is HO scale for slot car.
https://www.ebay.ca/itm/Jimmy-Flintstone-NB117-SSR-Panel-Delivery-Kit-1-25/122618730114?hash=item1c8ca55682:g:1woAAOSwsQVZefnJ
https://www.ebay.ca/itm/JFSL46-Jimmy-Flintstone-Resin-HO-Scale-SSR-Pro-Mod-Slot-Car-Body/201923739916?hash=item2f0397c10c:g:uE8AAOSwDiBZGJOi