On my ls/vtec (2-3 years ago), Eiseley did the work (can't remember the street name....but it was off on the 1-4 area (exit 3). They knew about ls/vtec back then and charged only $30 to tap the head and bore out the holes for the dowel pins. I was surprised the lady knew exactly what I was talking about when I called for a price quote. I was very happy about their work. Perfect compression after 12k miles when I sold the car. I remember them telling me that Colin drops off things to get machined there all the time.
I'm going to do a new build now, but I'm not sure where to go. Heard a lot of good things about Engine Lab but then some crap is also surfacing. Dwans used to be recommended alot but haven't heard about them lately. Eiseley's prices were awesome, haven't checked on current prices though.