2871r for 380bhp and fast spool up.
3071r for 400+ and fast spool up.
www.atpturbo.com if u want to import, or Turbo dynamics seems the UK supplier of choice.
Note, you will need to do a lot of extra work than just bolting on a turbo to get it to work best and efficiently. Injectors, afm, ecu, custom oversized turbo elbow and downpipe, etc etc.