Perhaps this is not an appropriate message for the GT40 site, but here goes. I've been researching GT cars/kits from the sixties in hopes of building a kit in the near future. The GT40 is an amazing machine and I would love to build one. However, I have also been smitten by the Jaguar XJ13 which was or is available as a kit through Proteus Cars Ltd. Does this company still exist? The web-site does not respond. What do other GT40 enthusiasts think of the Jag XK13 as a rival GT style kit car?