If you want to find some performance mods for your 3rz check customtacos.com
People are pushing high 200's in HP with a turboed 2rz (2.4L, from the 2wd trucks)
With a blower, exhaust, intake, tuner and fuel mods you should be able to hit over 200hp at the crank.

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