76' K10 Bed Question

[76Texan]

Ok, so took my bed apart, and have it flipped, I need 2 braces (the front closest to cab and the last one - fairly rusted out) I was thinking of coming up with a basic repair but realized easier to replace. Everywhere I go these things measure 5" by 6". measuring them I get about 3" tall by just under 2" wide (about 3" wide if you count the flanged part that is welded)

Measures 72 inches x 4 inches wide X 5 inches Tall
https://www.ebay.com/itm/195226543683?hash=item2d7468a643:g:tFcAAOSwvU5XNV3Q&amdata=enc%3AAQAIAAAA0Imaam5NSs%2BHpOEe%2BA6Z9qIIhjNfEJyPYBeabMKL%2FdNH0k2Bqo90fSn%2BRt%2BKSt2ZMt48a8OS7KzKIVi4JEPcgkgwSEr82PBOOKMd14e8D7I8DG4dzsltr2yapbebCN3pnVkpRz2CV8F7sOB6f%2B5IOQWlWPx7LSZOKqzgU%2Bq3WdD28g78nF0Ac7p4zqz0GGnng0BQBw5ZS9ezOctCqnYON9LYb6FeB%2Bpn6g09ZXJbaXSJUn6ds06mi4tUpFxDWULYCtf2zQcjkiLdN1zQcDfBvh8%3D%7Ctkp%3ABk9SR8Tmypi6Yg

Will also need 3 bolts.

Am I missing something on the 4-5" by 5-6 measurements.

.

[Mike81K10]

I myself am not comfortable about buying from EBay.

[76Texan]

http://forum.73-87chevytrucks.com/smforum/index.php?topic=31455.msg264039#msg264039
Not sure how I missed this.
This was helpful, the same as my measurements.