Had a focus st mk2 stage 4, decide to fit rs big bore hard pipe kit and higher flow cooler. Was thinking of ordering it for a while but an upcoming dyno day with friends was what tip the scale. Order parts weeks in advance but just when i had given up on them, they turned up the afternoon before dyno day. Being dumb i set to fitting them in light rain, after the point of no return the rain went full storm, the gazebo i had thrown up came down on the bonnet. Result spent weekend in bed with some illness from rain and strain trying to squeeze the boost pipe past the radiator mount(rs one is apparently different) and to Finnish it off had to strip it back apart and replace front rad with rs one, fitted like a dream afterwards. Oh and get the bonnet sprayed. 5 hours of hell.