I found only two pictures of an MBT-beetle from gallery. Either of them were not of chassis, allthough very nice ones.
Heres some new sites that I have found interesting:
http://www.clubvw.org.au/dak_to_the_future.htm
http://www.jprmotorsport.com/
That Australian racerproject seems to be very serious, but those pages lack pictures of it. And those Uniroyal Team Challenge look-alike beetles are just fakes but interesting indeed.
Justin