Sending heads to machine shop

[Nick032591]

I have a 1990 300zx N/A I'm rebuilding. I need to send the heads to a machine shop and I am going high compression twin turbo. Any suggestions on anything that should be done while at the machine shop? Also anyone put twin turbos on the N/A motor that can give any suggestions?

[ca18det_boy]

cloverleaf the heads. Also make sure that new valve stem seals are put in while you're there. It's cheap and the last thing you want to do is get everything together then find out you're burning oil due to bad seals.