Seat belt removal 1969 Coronet.

[1969CoronetR/T]

I want to replace my front lap seat belts in my 1969 Coronet. Does the large headed bolt just screw into the floor board without a nut under the car? I looked under the car and there does not seem to a nut fastened to the interior bolt so I am assuming it just screws into the interior floor board?
Thanks

 

[66383]

Just screws into the floor on my 66.

 

[67 GTX]

I believe you are correct. Under the car there is a welded in support piece of rectangular metal that has a nut part of it.

 

[beanhead]

Yep there's inserts behind the sheet metal. I like to chuck up the 13/16" socket in my cordless drill set it on low gear and spin them out that way

 

[moparnation74]

Check to see if they have debris or undercoat on them. Clean the threads before removal......

 

[YY1]

Yep, they are factory "lock bolts" and take forever to remove unless you use air or electricity.