well, you could always get a piggyback computer and dyno tune all your mods, you can probably pick up 10-15hp that way,...
Also, do a short ram intake like 4crawlers, where you relocate the batter to the AFM side, and put the AFM right beside the intake. Get an intake from a 89+ truck, they give about 8 more HP...... make the intake draw air from the fenderwell so it's nice and cool, not using engine heated air... cover it up when you go 'wheeling tho...

89 4Runner
3" BL, M/T locks, 33"bfg mt, bilstein, Kayline, tubebumper, toyotafiberglass panels
TBI: Elocker,3.4 w/ORS,b+b,S2Sstg2cams,arias pistons,P+P intake,TRDs/c,URDpullies+7th,downey headers,MAPECU2,WEGO WB, SupraMAF,walboro255,stg4clutch, EPaOo2 sim