I have one of these models as I think they were originally built by BTS models of Hastings. The owner wanted to make a model of every British entry to Le Mans! he got in touch and gave him dims and photos etc, in return he gave me a model of mine
Have to say, from a professional aspect, they are a little clunky but quite frankly and also from a professional point of view I wouldn't want to make one, in your colours etc for £100!