Here's what you will need for the oil pan swap, disregard the prices. Just got your local dealer or online at
www.trdparts4u.com, they have the best pricing around.
Rear sump oil pan conversion parts for 2.7L 3RZ-FE
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$80.24 12101-75060 Oil Pan, (T100 2wd 2.7L, 6 qts)
$50.46 15104-75020 Pickup Tube & Strainer, (T100 2wd 2.7L)
$13.97 11494-75010 Oil Hole Plate, (T100 2wd 2.7L)
$ 0.92 15147-75020 Oil Strainer Gasket, (T100 2wd 2.7L)
$ 8.68 15301-75020 Oil Gage (Dipstick), (T100 2wd 2.7L)
$ 9.21 11409-75020 Oil Gage Guide (Dipstick), (T100 2wd 2.7L)
$ 0.78 91651-60614 Bolts (Oil Hole plate), (4) Req'd
$ 8.95 00295-00103 FIPG (Form in Place Gasket material)
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$176.55 Total
The canister is for the ADD system for the front diff.