hmmm what i always say is it comes to driving, i know a fair few guyz with r33 and r32 and 180's and i know most of them dont know how to launch at all, if you perfect your driving in your NA it wouldnt suprize me if you stayed equal or even beat them! also dont put a POD unless you use some sort of cold air induction or heat sheild coz it will make it worse.
and exhaust... thats about it, but if you really want to gain a lil KW, maybe cams and upgrade fuel system.