NO you cant, in 99' toyota started using an AFR sensor and not o2 sensors.
Also, the Throttle body changed from a 3-wire to 5-wire somewhere in those years.
Also, the MAF's are different from before and after 99'.
ALso, pre-00 taco's had EGR.
So basically, when you get the harness, you have to get all the sensors from it. You can get a 96-04 harness, but you have to get EVERY sensor with it to make it work right, and just use what you have now as a long block.
Good luck.

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