Brian at IMM did all the machining. It was decked, mains line honed with studs etc, I also had him line hone the cam journals which made a huge difference. With the pan off you can grab a counter weight and spin the engine with ease. It's the nicest rotating engine I have built to date. No I did not o ring it, I used Cometic MLS Head Gaskets and ARP head studs, the heads and the block were milled for them nice and smooth. I also used copper coat on the gaskets right before installation.
