that DIY? cant see a garage doing it all in for £120. id strongly recomend VAG pump, much better fit etc etc, they are normally on exchange. same goes for belt kit really, most factor parts dont come with replacement bolts, allthough they will argue that most pulleys/rollers dont need new bolts, but ive done many belt and pump changes to find that a DIY job previous has gone boobs up and bolts are bent, threaded etc. cost more obviously but worth getting genuine in these cases IMO. also cost will vary dependant on engine