Need some assistance with OEM part numbers

i've been looking up parts i need for my truck, but i can't tell if i'm looking at the correct parts. Looking for a little assistance. The first thing i need is all of the stupid clips for the rear fender flares. i noticed there are 2 types, what is the difference? how many of each do i need to do both back fender flares?

http://www.toyotapartsdeal.com/oem/...56Z291220&Filter=()&Location=moulding,,75395A
http://www.toyotapartsdeal.com/oem/...N56Z291220&Filter=()&Location=moulding,,75396

The other couple of things i need deal with the rear diff and front diff. i dont think an ounce of maintenance was done on this truck. the drain and fill plugs are really boogered on there and rusted up. i dont want to re-use them on the truck. i have the crush washers already for the rear.
for the front diff, is this is the drain plug: http://www.toyotapartsdeal.com/oem/...ation=front-axle-housing-differential,,41110P

and this is the fill plug, correct? http://www.toyotapartsdeal.com/oem/...ation=front-axle-housing-differential,,41110M

rear diff:

drain? http://www.toyotapartsdeal.com/oem/...cation=rear-axle-housing-differential,,42110E
fill? http://www.toyotapartsdeal.com/oem/...cation=rear-axle-housing-differential,,42110A

also, for the tranny, i cant seem to track down the plugs on here. i'm doing the diy flush so i may as well replace those plugs as well. can someone help me find the check, drain, and fill plugs?

all of these bolts are so rusted up, i'd rather just repalce all of them with new rather than worry about doing this again down the road.

thanks!

 

2nd Gen 6 cylinder engine - here's the transmission info:

Drain plug and overfill plug gaskets are same part number -

$11 35178-30010

35178-30010

Refill plug gasket - 90301-15004

Transmission pan gasket - 35168-60010

 

thanks for posting that up. i should have specified, i have the gaskets for they tranny, i'd like to replace the actual plugs themselves. i didnt get a close look over the weekend, but if they're in the same condition as the ones on the diffs, they need to be replaced for sure.

 

2 other places to look online that have good diagrams are:

http://www.partsouq.com

This one works best if you provide a vin

http://www.villagetoyotaparts.com

Scroll down to "Parts We Sell" and select yr/make/model/etc