New Build Advice Needed

You need to seriously consider the head mounting and gasket availability. Studs and a custom cometic gasket are necessary. That’s the weakest link in the slant for boost. Stock bottom end and any forged piston with big ring gaps will suffice. Good machine work, IE round straight bores and flat decks. Some kind of boost referenced timing control, (msd6btm) is mandatory if you’re going to drive it. More fuel pump than you think you need. Garret has a great turbo sizing calculator online for picking a turbo. Lots of guys use the Cummins hx35 but imo there are better options. Intercooler is mandatory for anything more than baby boost 4,5psi.