Its not really a filter, more like a fine screen in that era Toyota. So i can't imagine it clogging. I have never replaced a transmission filter in a Toyota, just the fluid. But if I did I would go to the dealer. Seems that Toyota prefers flow over efficiency with all the filters (oil, air, transmission, etc). Also Toyota dealer parts are reasonably priced. If you have a dealer close to you why not. But IMO don't bother, just drain and fill once a year. Or do exchange through the cooler line.