Speaker locations for 74 Duster.

Darcy,
The thing about the stud for mounting speakers under the dash is this (at least on the A-bodies I have seen), it has virtually no head. It is round, not hex-headed, it is thin, like about 1/16", and it has no slot, like for a screwdriver. I wouldn't even call it a bolt, it's more like a threaded stud. I took a photo of one this weekend on Aaron's Duster. I'll try to get it posted this evening when I get home.

This stud is held in place by a special clip that fits into the "key-hole" slot found when you remove the plasic defrost vent on top of your dash. I checked those references above to the Mr G catalog. I didn't see anything that looked like it is the same. I've been toying around with the idea of using some of those flat-topped plastic "trees" that hold panels and trim in place. They would be long enough, would press into the speaker mounting holes and grip it securely, and can be found at any hardware store with a "HELP" section. I bought some recently for a test fit, but I haven't had time to try it yet.

Hang tight and I'll post a picture tonight,
Jerry