Speaker locations for 74 Duster.
Where do you get the mounting studs for the brackets?
Darcy,
As you probably know, those original mounting studs are special, not your typical run-of-the-mill bolts. They have a very flat head with no slot for a screwdriver or other tool. They also slip through a special clip to hold them in place in a "keyhole" slot (as seen in the second pic I posted).
Aside from taking a small machine screw to the bench grinder or belt sander to flatten the head, I looked at, but haven't tried, some of those plastic "tree" fasteners, like those used for door panels. They have a very flat head and are long enough to protrude through the dash and bracket, even if a shallow spacer is necessary to prevent the speaker cones from contacting the underside of the metal dash grill (depends on the model and design of the speakers). You might be able to use some of those with small washers slipped over their "fins". If you ever need to remove the speaker bracket, a side-cutter or utility razor knife would make quick work of the plastic fastener.
I'll try to mock one up on Aaron's Duster and let you know how it works.
Jerry