The first chassis was an old military ambulance converted into a mud truck. It would grow over several years to become a full blown monster truck. It was sold to the Roy Brothers in the early to mid 90's, changed to run a truck body, and became High Anxiety among a few other names. It has since been scrapped.
The second chassis was the first attempt at a true racing vehicle. It was sold to Sam Sturges, and it would run a truck body with the name as well before being converted into the Nasty/Nasty Boy truck.
The truck's third chassis the the one currently being run today. It has run a retro splatter paint body and a black with green flames one.