The deal was done many moons ago (10 years+ ????!!!!). The chassis is an 80% complete David Brown chassis from Classic car developments based in New Zealand. Which included the pressed steel inner and outer roof and some of the bulkhead components. The 'deal' also included a zf-2, all bodywork bar the sill covers and a 330ci SBF with original webers. I sold the zf-2 and engine (but kept the carbs).
I have now just about got all the parts to complete the car and am running out of excuses to put the thing together.
There is a company in the UK who produce an excellent mono chassis (the best I have seen) and can be found here...
GT40 Monocoque Chassis – Building and Racing a Legend
If you do go down the 'original' root then be prepare to remortgage your house (like I did) and the 10 years to get to this point was due to me saving, buying a few parts, saving buying etc (and paying off the price of the chassis).
Other mono chassis are available from the following...
Gelsco will make a turn key gt40. Do they sell just the mono?
Classic Car Developments also still make mono chassis but I think they also only do turn key cars.
It depends if you are planning to get a historic racing passport for the car. If not an easier route might be a Tornado kit, Southern GT also produce a nice kit or buy a GTD based car and you can go at the chassis to make it more monocoque. Frank Catt is the go to guy for anything GTD (or GT40) for that matter.
The parts I have mainly came from GT40GoldParts, uprights and hubs from John Wisher, wheels from USA, some parts from Jay Cushman, ZF-0 original gearbox from St Louis (long story) and loads of help from member of this site with other parts. Its been emotional......
PM me.
Andy