By Tobias Carroll The newly-announced Prodrive P25 reads like a study in contrasts. Starting from a Subaru WRX, Prodrive have effectively transformed it into a high-performance Impreza of yore — and the total cost is just over half a million dollars. A new article at Autoblog has more details on the announcement — and what drivers of the P25 can expect. The restomod debuted earlier this week at the Goodwood Festival of Speed; based on the details revealed in the article, it seems like the key aspects of the P25 are less about how it looks than how it’s made. That includes a carbon composite bo…