'72 shoulder strap roll bar pivot problem

[Jim S]

On my 72 there's a plate on the roll bar that is held in place by two 3/8" bolts.  This plate is what the upper pivot of the shoulder strap attaches to. One of the bolts was stripped.  I got it out, but apparantly there's a nut inside the roll bar and it fell down inside!  Does anyone have and suggestions for a workaround to secure the bottom of this plate?  

Edited 2 hours ago by Jim S