3 point seat belt mod

[vince1]

Can someone re post the link on where to drill the holes in the upper cab corners for the 3 point belts in a 66?

I thought I had put it to my E-mail but can't find it and am having not much luck in searching here. This would be a nice winter project for me.

Although I don't expect it to happen with this truck I still remember going around a corner with the old 51 1 ton and the door flying open. Wouldn't want to be sitting on the pavement watching it driving away out of control.