Its Easy man, im in the process of builing a bone stock GSR bottom end for that will make 200whp.
heres what i would do if i was you, and this is what i reccomend him and what i can get it for you.
1) SMSP 4-2-1 Header-$650 shipped
RMF NarrowSTyle header 4-1-$675 shipped
You can keep AC with both of these headers, and they are 15+whp headers. I get them direct from Dave at SMSP or Randy rom RMF
2) Rocket Motorsports M22xx Camshafts and Dual Valvesprings and titaium retainers good for 12k rpms-$850 shipped (come with Rocket Motorsports Spark Plugs and ROcket Motorsports custom ECU Map)
3) Headwork, $1000 , SRZ Racing/DFE Enterprises, Port,polish,bowl work,valvejob, Omnipower Valves (.3 bump in compression), includes setting up the valvetrain and assembly of the head.
4) Conversion harness to OBD1-$90, OBD1 GSR ECU-$150, Chipping and socketing ECU for Uberdata $80. FUCK hondata and EMS, run Uberdata, much better system IMO that is constantly updated. Same functions as Hondata (timing, fuel launch control etc).
5) RPM service 70mm Throttle Body $330
with this youll make 200+whp, I guarantee it
PM me if you have any questions