rear seat belts

Does anyione know if there are holes for rear seat belts on a 66. Do I need to drill holes, and if so, can I get to the backside to put the nuts on?
Thanks

[jac912]

There were no such holes or mounting points on my '67....made in late '66. You could go
in through the wheelwells for the outside point.
I took care of the situation by using one belt across the back mounted at the two outside rear seat back bolts. I figure lateral support is mostly against the center hump anyway....and my kids are still skinny!