Walt, just using the OEM bolts and a little lock tight and torque to speck.
The body is on the car trailer in the building, it should go to my friends shop later this week or early next week and put on the rotisserie. Nice thing about this one no rust, just some dents and clean up and replace a few under panels from old damage they did not do. pass trunks drop and 6 inches of trunk floor for damage, no rust. Only two body bolts to replace cage nuts on, the ones behind the rear wheels. Most work will be to replace the panel between the rear window and the trunk. It is not bad but the under structure is rusted and someone used a air gun to cut speaker holes. I bought an Ames top panel, seem to fit good, may be slightly lighter metal, will try the to coat the under side with bed liner for strength. I have a good rust free under panel from another 66 GS hardtop. I has been removed and de-rusted and epoxy primed, and test fitted to the new upper. So we kinda know what to expect. Some of the other parts have been de-rusted, and epoxy primed and painted or primed with sand-able primer or under the hood black. Inner fenders, both front fenders, and the core support. Still need to strip and prime both doors, deck lid and hood. I will work on striping the body and parts, while my friend work on the dents and panels. Going to use a 8" DA with 40 and 80 grit to strip, this car has only one coat of paint in most areas and max of two in a few spots.
