The search results I posted will work for your 4Runner and 5 speed transmission, just to be sure once you get to any of the websites enter in your 4Runner's info for good measure so you're sure to get the correct pan, and also once again a phone call or send an email to find out if the drain plugs come with the pan, if not then you can order them as well,
I'm not sure on the V6 but R&R of the pan should be fairly easy unless your exhaust is in the way for removal, the best advice I can give you is be careful not to break off any of the bolts when removing them and especially when putting them back in, it's best to use a torque wrench to tighten them to the correct torque setting (most parts stores will usually loan out such tools for free but require a deposit) or if you plan on regularly doing more work on your 4Runner buy a set to have on hand), also first put all the bolts in finger tight making sure the gasket stays in alignment, then using the torque wrench tighten the bolts a little at a time starting in the middle and working left side to right side and front to back in an X pattern and repeat this process until you reach the correct torque setting, and also use the torque wrench on the drain plugs so you don't strip the threads again!!
Here's all the torque specs for all of the transmission bolts/nuts/plugs.
http://4runnerclub.com/i/4r_files/f...07toyrm/07toypdf/07rmsour/4runnerr/003020.pdf