There are many ways of reaching 400bhp. But I wouldnt use a 400bhp Cosworth as a daily driver like the above. Search/read on the forum about different options
R&D gearbox is definately not suited for a daily driver either.
The Brembo 8 pots are very expensive, some AP 6 pots does the job.

I have to agree with Cam, 400bhp daily driver, it has to be Evo.