are you sure they're 10mm bolts? i thought they were plastic clips? because i need a pair too. i took them out a long time ago and now it's lost somewhere and i remember seeing them as black & plastic.
i think it's #45 in the diagram for the 94-94 models (part number wasn't listed, i have no idea why the site does this sometimes. most of the time it's the part i want too thats not listed)
and #35 in this diagram for the 98+ (part number: 90149-SA0-003)
i've been wanting a pair for years now that my front is sagging a little and it is pretty hard to not find it but to identify is a pain. if you ever find out let me know. i dont' even know how it looks like, i just remember seeing it as a clip and it's black.
i did the 98+ front conversion on my so i hope they work for both bumpers.