I have had the pleasure of assembling a safe dozen of Dave's engines with Quint Stires while I lived in WF. Not one engine made a peep it wasn't supposed to and they all sat rock steady in the hole at idle. I strongly recommend D & L Performance Machine for any and all of your machining needs. My 1973 Pontiac SD455, we built in 1998, over 20k miles ago, still purrs like a kitten with a bad attitude and sits motionless in the bay at lidle while supporting power brakes and AC in Orlando heat. A Be Cool radiator makes it all possible and keeps Dave's outstadning work from unnecessary damage and wear. A 200R4 by Steve's Transmission in Dean still wants to snap your neck during WOT shifts and drives like grocery getter during conservitive street use.