Here is the Thorleif Corvette before it was sponsored by them. Jan "Juan" Johansson was the man to beat for many years in the Stock class. He usually competed with a L-88 but also had a couple of ZL-1 engines. Beckers paint is the sponsor, and they also sponsored Lawrienco´s Firebird as seen in one of the earlier pics.
The UFO Mustang and another Corvette.
Here is the Jungle Jim chassie with the Opel body in 1976.
Ragnarök also had the shroud over the pipes.