great examples guys and in good relation to this question, i think the stock turbo for his car is something like a kkk03, or something like that...i have some v-dub friends that say "well im making 19psi on my stock turbo" and i keep telling them that isnt as much as my t3/t4 making 10psi... the turbo inlet in his car is about an inch, so boost isnt relavent, its the power level you want to achieve. i have seen a 440 hp golf, turbo and notrous though.

its all up to the amount of green you want to let loose with