I have just ordered the DVD, build manual, price list and brochure off the site for £15.
I had a quick look at the prices and clearly you will go through £20k quite quickly and then a chunk on the engine, I would be tempted to go for a duratec 2.3 and have a BDT style rocker cover on it, Cossie would be nice but expensive. Might be nice to do a Hoonigan replica but I think I would have to have it white with red seats like the road cars.