My limiter on the 3rz hits around 5800 or so. Now your saying it is "safe" or factory limited for a 22re to rev to 6300.... Jeees.
Toyota lowered the limiters on the tacoma engines. The 2rz,3rz,5vz,2tr are all 5800-5900.
Im not saying it is safe 22r's will spin a rod bearing if you sneeze to close to them. That's just were Toyota has the limiter set.