Re file! (Means m8 at Greek)
I think
http://www.todaracing.com got few things for the 3SGE but check it out.I think you should done a complete work,dont upgrade just the head wait until your engine goes to the limits and later do the all job complete.Me pre-previous(My previous was a WRX) car was a prelude JDM 2.2 VTEC 1994 and i upgrade the BLOCK(Camshafts,itr,valce springs) and with a lot of other mods (cc headers,fuel pressure Reg,Flywheel,racing clucth,intake system,Apex VAFC,spark plug wires,exchaust) and the car just hit only 260HP@8700 but i wasnt happy,what i`m suggesting to you,cuz (celicas,Preludes etc) are a little bit heavy cars its not easy to get HP without force induction like(turbo or Nos),and besides its dangerous for your car pushing it for the High RPM without upgrading the botton.i had a lot of troubles with my previous cars thats why i choose something fast and reliable like the GT-4.
Good luck with it and if you need anything else let me know.
I`ll be glad to help.