Won't be that much of a squeeze as the width of the GT40 is approx 1800cmm wide so about the same as the Supra. Plus when the chassis arrives it won't have the wheels and bodywork so will be much narrower. It will also be living on a build table with castors to make it easier to work around the garage.
In terms of the car itself I've gone for the basic package to start with and then will keep buying the rest of the car as and when I need it as you don't save any money buying it all in one go. I've also had the chassis specially modified and the floor slightly dropped due to my height (6ft,2") and its being powder coated in satin black.
It's going to be a big and expensive project but I just love the GT40, just awesome cars and so much character, they are a real event. I even turned down an Aston Martin V8 vantage for this project so I am clearly nuts.
Trev