Roll bar ear's bolts

[JessC]

I'm building a 1967  Gt350" Clone" not to pass it off as real one. This will NOT be a half A@@ clone !
I have the Branda Roll bar for it  What bolts are used to mount to roof inner side thru ears on roll bar? I have  2 bolts that look like seat belt mounting bolts but smaller in Dia. and longer with same style of bolt head. also ideas on a "nut plate for inside roof  structure .
Thanks, Jess

[Tired Sheep]

The Branda bar does not look like the original roll bar

[shelbydoug]

The original bar uses the original Mustang seat belt and shoulder harness bolts and roof mounting points.

[JessC]

would the shoulder harness mounting bolts on  mustang  be smaller in Dia. and  longer than seat belt mounting bolts?

[shelbydoug]

would the shoulder harness mounting bolts on  mustang  be smaller in Dia. and  longer than seat belt mounting bolts?

Same size. I think they are 7/16 NF thread? I think though that the roof bolts use a larger hex head then the belts? Yellow cad plated.