[BlackasCoal]

I've read about messing with the steam holes too but haven't dug deep enough to get a good picture in my mind or reasoning on how it works.

Had 24hr duty last night so spent a long time on the piston thing messaging and bothering guys elsewhere who are running 6.4's in this setup. Also read a good thread from 4 years ago about spray angle and cone profile. So the QSB is going to be the route I'm gonna take too. No coatings but fly cuts just incase I decide on running a different cam down the road. Now to order them. I've been looking at a place called Enterprise Engine Performance out of Ohio probably going to call tomorrow if I a get chance.

Also Emailed the machine shop today again to get a better, more accurate quote.