No, 0.32-0.36mm.
No. You won´t need girdle, IP mods, rods, and 3 grands into trans. Pistons could be also grinded on their place
I needed 4000-5000$
Yes there are.
No. I wouldn´t use tiny 250-300hp turbo for 400hp build if it´s not smaller one for compound.
BRM manifold.
Use stock rods and pistons.
I do 40-50mpg with ~400hp 1Z all the time.
Zero benefits. Using BHW lower end with ALH gasket, you will get head gasket problems more easily. Use ALH stock bottom.
Head porting and good cam (not synonym for big) which works fine with turbo(s) choosen for the project is the key, polishing cams is not. I´ve used AFN manifolds with welded new flange, and they are OK. You could have bit benefits from tubular or other OEM models though depending turbo and cam.
Exactly. Always custom tune whether you change anything. Always.
No. Absolutely use meth and water for gaining power and engine life!
No. That´s the point where costs vs rewards takes a huge leap after tossing VNT17 to trash.
This is quite much 100% crap. After 200hp ALH is yet coming street friendly. For example 2060/2260 sized turbo is so small that there are hardly difference for alh stock on low end. IF there would be all power after 3000rpm is not bad when you rev up to 6500-7000rpm, but it does not need to be like that. Although, i can´t get why to idealize 1000-3000rpm when you can have real power after 3000 or 5000rpm when talking tuned (or daily, as me) engine. I just can´t get it. I would not EVER change my HX35 single turbo engine to VNT17 engine on street car.
Why people always want waste money for all cam polishings and stuff where are zero benefits for real performance? You need only necessary. Port head and grind cam, put it on place, weld new flange to exhaust manifold and install turbo, make pipings and install injectors and pump. Tune it properly that EGT, EMP, torque and rpm will be on safe side and send it. Don´t think it too complicated. Don´t repair things which works.