APS Twin Turbocharger Kit (it includes an oil pan and shielded crank angle sensor wire, so no worries there)
a good choice
Pistons and rods (you're choice, IMO, Arias and Pauter are the way to go, they are cheap and can hold well over 1000whp)
you have personal experience with Arias and Pauter? We prefer the CP or JE pistons and Pauter rods
ARP head and main studs (stockers don't last over 400rwhp) Must need
Twin-plate clutch and flywheel (ATS, get the carbon coating on the flywheel too for it to withstand 50 more HP (it already can hold over 700rwhp though) for $50 more) Over kill unless he will be pushing 700hp, clutchmasters stage 3 will do just fine
5AT 3.27 rear end differential and Quaife LSD please expound on your reasoning, or are you just quoting parts?
NGK Iridium spark plugs stay away from iridium
Gauges (I recommend only a boost, EGT/wideband/a/f ratio, and oil temp.)
EGT is useless,by the time you see it go over,you have done damage..Go with boost and A/F wideband and optional fuel pressure
Ceramic coat the pistons (Arias offers this as an option from the factory) and rods.
Waste of money..
JetHot coat the exhaust manifold, the turbocharger, the test pipes and even the exhaust all the way to the muffler) another waste of money...
Non-resonated test pipes
Good-flowing exhaust (you may want to get a custom HKS exhaust made, just get a carbon Ti muffler and get the muffler shop (preferably the one you are getting to do your turbo kit to do it so they know what it's for) to mandrel bend some 3.5" tubing and run it from the test pipes to the muffler; you can do a double setup of that if you want also) Overkill...
grounding kit useless..
Unorthodox Racing crankshaft pulley wont make much of a difference on a TT car