FWIW, I'd let the machine shop rebuild the heads and pick them up completed. Oh that's right, I think the cam's have to come out to install the heads.
I just let my machine shop give me back a long block.
You can use the stock valves, just get the car tuned soon.
The stock HG's are fine, I did have my machine shop install ARP studs.
Most guy's will send the vf40 off to Brian at BNRturbos and get a 16g that he sells.
I just went with a vf52.
215,000miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. CHECK your oil, these cars use it.
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