I like this one myself:
For Toyota 3.4L V6 Engine Water Pump &Timing Belt Kit Tacoma Tundra 4Runner T100 | eBay
However the only two things I would look out for is that the idler bearing is NSK; other idlers such as the Koyo have been smaller in width than the belt. Also try and at least make sure the WP is Aisin; someone years ago used a GMB that failed them almost right out the gate, not saying all aftermarket ones are bad right out of the box.
