Re: chassis and body
Bob
As I understand it there is RF as already mentioned. There is also Tornado in the UK who have been supplying them for years.
MDA also in the UK, although I have not seen one in the flesh yet.
GT40NZ may also be able to supply basic body and chassis via one their people in the US.
Have a browse through the manufacturer announcements section, or search for MDA, Tornado, or RF