This was expensive, but made it easy:
C-Channel Kit 60 Series
I will also warn you that the gas tank became as a big a project as the C-channels, and from what I can see it is a very common problem. Both hard lines coming out of the tank that are part of the fuel pump bracket were corroded so badly that they fell apart. That bracket is not available anywhere from what I can tell--Toyota doesn't make it and it doesn't appear anyone else does either.
@Jakes40 and
@jcj_78FJ40 drove to the parts store to get some new line in both sizes, bent it, and used JB Weld to hold it in. It is not an ideal solution, but it is one that works. See the photo here
#3,799
If you are interested in buying a used fuel pump bracket, PM me and I'll give you the contact information for a guy selling one, but he wants $350.