[BobS]

Measurements on the rear hooks in the link above are:

Bolt center to center-4.25"
Overall length-9"
Height (for lack of a better word)-5"
Width-approximately 3" (they curve outward)

Tow hook dimensions are compliments of the wife, why she puts up with my antics, I have no clue!

The RPO for Front Tow Hooks was V76 meaning they were available from the factory. I've never seen the RPO for Rear Tow Hooks which leads me to believe they were all either dealer-installed or installed by an upfitter like when this truck (62 W5000 NAPCO 6X6) was converted or by a coach builder in the case of school buses or they may have just been installed by a previous owner who bought them from the dealership or even from the source that supplied the dealership. Dealer-installed accessories will vary by year or supplier, this would explain the difference in tow hooks from year to year or region to region and would also explain the existence of an identical tow hook on another make of truck which in the case of this two-hole version is very common.

Bob