I'm coming back to my Rs turbo roots ..not owned one since 1999 and 2002 ..had cossie and focus Rs etc ..so I'm looking to buy a nice rs turbo in either mercury grey or white ..and ill be wanting to have a nice reliable low lag engine built ..what will be needed to achieve 260bhp ..and nice and smooth to drive .what sort of price and what parts are needed for such a engine build and what best turbo etc.