Badfields, you can buy the different SEMS fender bolts and the CIP nuts from different automotive fastener suppliers inexpensively in bulk. Just need to know your thread sizes. 1/4-20×1 were typical of the valances, and fender splash shields, and 5/16-18×1 were fairly common for the fender top to inner fender. most of the fender hardware. You will need 6 studs and a bunch of body washers to space the bottom of the back end of the fender out, and the top back end of the fender up. Sometimes theres people selling this stuff used in lots from scrapped out cars. I parted out a 92 dakota for the O/D trans and to make a trailer out of. The rest of the body was 1/4-20 and 5/16-18 SEMS bolts, and CIP nuts. I kept all of it. Dropped it all in a plastic container full of evaporust to clean em up. I am working with a similar issue as yours. An almost thoroughly stripped 69 barracuda roller. I had to not only get the big stuff, but also had to find all the damn hardware to put it together lol.