[stevenet15]

depends how big your wallet is and how far your prepared to go as with enought money almost any engine could be fitted, but for best bhp for £ people drop vts engines in however you allready got a vts so how bout looking into a turbo or s/c conversion as it will retain the standard engine and will give a better power to weight ratio then a bigger engine e,g a 1.6 vts turbo can be tuned to give the same bhp output as a 3l v6 but weights half