Did he do head studs? I have a few friends with twins only one of them have studs and o-rings the rest just have studs and they see anywhere from 55-75lbs. Both blocks have the same number of head bolts.... some just get lucky with HG. I did, I was over spooling my HX-35 and could hit 47lbs. I installed arp studs when I got the HX-40.
