Crossmember rust- is my tundra done for?

thought you were looking for front crossmembers and the front frame rail extensions which are only
about 12 inches of very front of the frame rail not the frame itself.

 

I need more then that. The cross member where my power steering rack mounts is rotten out. BUT i cant even find the front 12" new.

 

in the diagram I believe 57203A and 57201E are the 2 piece front frame repair for the passenger side and 51035 welds to these to mount the bumper.
check the welds on the front of the frame and see that it is 2 pieces left and right that are welded together and the bumper mount piece is welded to these.

if you provide some pictures it would be more helpful to see the extent of the damage

heres a better picture of the parts involved

 

I have a 2010 4.6L 4wd reg cab long bed which is slightly different...but...While i SEE those numbers on the drawing. I and a couple of parts departments now have not found a way to ORDER them. Unless i am missing something. I see no way to order part numbers 57203A and 57201E for example?? I need more than that anyway. I also need 51201A, 512021B, 51961E, 51306 and a whole lot more.

 

I need to do some more research... I just googled toyota 57203A and came up with part number 572030C010 so maybe these parts are orderable....hmmm

 

Here's the link I provided earlier to cross reference part diagram numbers

FRAME. 2007 Toyota Tundra CrewMax Limited 5.7L 4WD | Toyota Parts Center Online

enter your VIN in search box and it should provide parts for you model
or enter your truck info here, either way
2010 Toyota Tundra Parts - Official Online Store

take the number in the diagram and scroll down the page to get the orderable part number and price

I would shop around since these prices are way to high