Yes well.. the thred is asking is it possible to make EG b16 do low 13s...

NA = Slicks, hardcore weight reduction, A full NA internal build (cams, valve train, Pnp, High comp pistons etc etc) + all quality bolt ons.. not to mention ability to put the power to the ground (gearing + lsd) and suspension setup well, as well as shitload of practise and good luck

Boost = most likely a Good quality bolt on turbo kit + a Decent tune

a Na b16 (keeping 1.6 displacement) build will probably cost you twice that of a boosted bseries setup

This is IMO, any feel free to disagree with me.