A place to mount tow hook on GU

[Silver]

If this is a breach of a rule unknown to me, I apologise in advance, however here is the info from the outerlimits site, from 2004, the Outer Limits member wrote:

.... I carried out several hook tests on a test rig.
The bighorn hook with 10mm bolts snaps the bolts around 5 tonne
Drilled out to 12 mm, 8.8 bolts still fail but 10.9s hold till the hook breaks @ 8.18 tonnes.
The Black Rat Black hook snapped around 5 Tonne
The Black Rat Chrome hook straightened around 5 Tonne
The Supa Cheap Ridge Rider Black hook snapped around 8 Tonne
The Bush Ranger Black hook straightened around 5 Tonne
3/4 shank towball snapped around 8 Tonne
Pintle Hook/Nato Coupling stripped the 10mm mounting bolts ie Patrol, around 12 Tonne
Pintle Hook with 12mm 8.8 bolts stalled the test rig around 20 Tonne
The Snatchmaster hooks from Cookes straighten around 9.8 Tonne, this opens a new can of worms as the M12x1.75 bolts broke first.

Standard Toyota L/C hooks straighten @ 4.6 tonnes,
Hilux hooks however, by design, push the rope further away from the mounting plane of the bolts, causing the rear bolt to stretch and snap , then shearing the front bolt, 8.8 bolts failing @ 4.5 tonnes.

The Cookes hooks consistently have the highest rating straightening at arround 8 to 9 Tonnes but the bolts they supply are sometimes only 4.6 instead of 8.8 and both of these can let go before the hook straightens.
A Cookes hook with 1/2" grade 8 bolts is my answer.