weigh up how much your car has cost with buying and modding ? 20k ? can you get your car to this spec with 8k, id highly doubt it.
tbh he doesnt need to proove anything its a bargain as it is even if its just 750 hp, theres no gaurantees with a car like this as im sure others will agree it may last ages or not as the case may be, and if you cant accept or afford that then its best not to own a car of this calibre. veyron and maclaren f1 comfortable pace road cars for under £30k is an absolute bargain imo.
you will never get a car like jamie ps car for £28k id guess hed want at least double that assuming hed ever sell it which he probably wouldnt, ive tryed to tempt but to no avail last year