I love a well built na as much as the rest, but bang for buck turbo wins every time. I have been in a z32 with a well built engine 3.3L, port, polish, custom cams, bigger valves high compression, the thing went hard then a stock z32 with vg30dett and 14psi of boost was faster. cost of getting 300kw out of the NA over 8k, cost of getting 300kw out of the twin turbo $40 for the boost contoler