WOW, amazing you never blew it, you must have a good headgasket and headstuds...
Power is kinda weak for all teh money you have put in it tho, a stock 5vz puts down 155hp at the wheels...
also, a turbo'd 2rz (tacoma motor 2.4L twin cam) have been putting down 200-225rwhp at 7psi, and 300rwhp at 10 psi intercooled... with the only internal mods being headgasket and studs... some people are even pushing 18psi on teh same setup with with megasquirt and hitting 400rwhp...
what are you running for engine management?

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