Hey guys, I am planning to start my all motor project this summer. Here is the parts list I was planning on having. All suggestions welcomed and appreciated, I don't want to do anything wrong haha. Thanks in advance.

Ferrea SS Racing Valves
Portflow Racing Valve Springs
Cosmetic Head Gasket
Type-S Pistons w/ Rings
AEM Fuel Rail
AEM Pullies
AEM Fuel Pressure Regulator
Crower Stage 2 Cams w/ Stock Idle Lobes
Prospeed Header w/ Merge Collector
Carsound 2.25" High Flow Cat
Greddy E-Manage

I have a few questions. When buying the head gasket, should I get the high compression or regular compression one? As for Type-S pistons, would standard bore or .25 over bore be better? Are the upgraded fuel mods neccessary? Would I need to do anything to the stock block to fit high compression pistons and valves? Am I missing anything to have it run reliably? Thanks for your help