As others have said, although a link wasn't included, if you want to build your own high quality car contact one of two people:
Greg Leach at Vintage Motorcars in Hawaiian Garden, CA or
Carey Hines at Beck/Special Edition in Bremen, IN
These guys can get you what you need/want and I'm sure would offer any consultation along the way.
If you want to build everything including shortening a VW chassis you could get a body from Kitman Motors but that means you're building it all from scratch. He also doesn't sell any of the parts you'll need.
The blue lettering is a hyperlink, just click on the link to go to their websites.