i've seen a lot of si turbo's with greddy running 13.9's from a few different people and with an ex turbo greddy i've seen people hit 13.9's on stock internals but for the most part ofrcourse the b16 is going to win i'm just proving the point that in MY SENARIO is it not worth me getting a swap to turbo when i have an engine to turbo..... unless ofcourse swap the b18c1 but i won't be having that kind of money to do both swap and to turbo.... don't get me wrong the b series engines are WAY better then SOHC if i had the money i wouldn't dump a penny into my SOHC...