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Once you have the engine broken down to the block have a machine shop measure the bore and taper of the cylinders. This will tell you what piston options you can use. I'm going to assume that an overbore will be in order. Currently there are no aftermarket options for oversize pistons, so you will need to use OEM in 0.010, 0.020 or 0.030 oversizes. Then you can have them 'de-lipped', valve reliefs cut and coated, whatever you fancy. I used 0.030" and had them de-lipped. This is thought to greatly reduce the chances of pistons cracking.
Cyro treating is probably overkill, but that's just my 2 cents.
With that kind of HP goal and aftermarket turbos make sure to do valve springs, pushrods and rockers. You want to make sure the exhaust valve closes under high drive pressure.
Headstuds are a must, ARP, A1, H-11, I will let you make the choice. Bottom line is they are all better than stock when installed correctly.
Good luck with the build, I will be following along
08 F350 CCSB 4x4 01/07 Job 1
0.030" de-lipped slugs, 70+ atmosphere turbo, ARP studs, Mild Ported Heads (w/bronze guides), Flo-Pro EGR Delete
Mini Maxx Race tuner, AFE exhaust turbo back, S&B Intake, Sinister coolant filter
Lifted nicely on 20" wheels