Mine was a UK300 but I've changed it all now so don't even class it as a Prodrive anymore. But from when I changed it there wasn't anything that you don't get on a Standard WRX other than the exhaust Fuel pump injector was the same. I'd swap it as I said before and see how it goes, keeping of boost for a bit like savage said will help protect it if it does falter on anything but I still think it will be fine.