Rallye 037 replica kits website
These guys were at Stoneleigh 2007 with an 037 road car replica. A lot of links on their web don't seem to work so not sure if it's just a badly designed website or they are no longer doing it??
The replica on the home page looks pretty good [OK a lot high but I think it was empty] (but the road car they had at the show looked pretty good; well with some odd plating underneath that could be done a lot prettier if done at home) as it was based on a Beta mono with an extended spaceframe back end I think. They claimed all panels (inc the double bubble roof) were moulded off an original car)