I have a 2001 Estima v6 with the 1mzfe.
Water pump, Timing belt, Trans Sump gasket and filter all changed easy to find. Just gotta find yourself a good autospares guy.
Stay away from the franchise one because they struggle sometimes like autobarn etc.
I had a tranmission issue like it was shifting incorrectly. Had trouble finding a transmission that matched up. Heaps of cheap ones out there for
around $300 bucks but the camry,avalon,Lexus es300 all had diffreent codes on them so didnt want to risk purchase.
In the end flushing fluid and new filter seemed to done the job.
I love the Estima. Looks good with 19 inch deep dish wheels, full climate control.Body Kit from factory. Automatic doors, Exhaust . Adjustable headlight level.
Happy buying