sorry for late reply Jon
megga busy with wedding stuff at the mo, cant remember the spec just huge , lol, once its on i will dig out all the spec and do a full thread hopefully getting it on the rollers soon aswell to sort it aslong as the clutch will take the extra grunt.
No external wastgate as i did'nt want to possibly nack the manifold as ,mine does'nt use a collector so an external wastegate would have to be welded onto the centre piece which is all tight pipes anyway to be honest