Parma still make Womp Womp chassis and bodies.
The Womp Womp bodies are mostly around 2 3/4 inches wide.
The chassis is just under 2 1/2 inches wide and pretty much the same as the "Home Set" chassis
"Home Set" bodies are 2 1/2 inches wide.
The current Womp Womp has two sets of front axle holes, so you can choose two different wheelbases about 3 inches and about 3 1/3inches