@driller check out ProCharge, located Sunbury, Vic (speak to Ben). I have stage 3 h/f, ask about stage 2 may spool up faster low down.

Another that has just come on line is Eclipse, a few getting out there am impressed with quality but maybe wait for a few months as they are refining there design. Rather control max boost (tillix/dawes). What eng do U have.
Will respond further tomorrow as have a few things to do.