Hey Doc,
Can't help with the models, but whose GT40 kit are you going to build? I look forward to seeing the website updates and wish you the best of luck.
I was in the UK GT40 club for a couple of years whilst I tried to find the right spec s/hand car for the right money but nothing that looked like a good deal ever came up. Ended consoling myself that the cockpit's a bit of a squeeze for me anyway, that and I've got a Porsche Spyder rep already!