Stage one can be a decoke and ports emery clothed to some people, to others the ports will be opened up to match your inlet but nothing else touched. Stage 3 being pretty universally a big valve head (though how big is up to the tuner). Get a Dave Baker head, he only does it one way, proper full on with valve sizes suiting the rest of your spec. Cam choice is down to you if you want it driveable or mental. No reason a properly sorted head shouldn't be nice to live with.