I am looking for a definitive answer on the size of the bolts that fasten the lower edge of the front fender to the rocker panel front. Some people indicate that the bolt should be a 12mm head but also an m8-?? thread (either 1.0 or 1.25). I can find m8-1.25 stainless or zinc-plated bolts but they have 13mm heads. I can't find any bolt with a 12mm head. The ones on my car have been hacked by replacement with a self-tapping bolt so matching that is not on. It's a small detail, but I would like to get it right if possible. The original part number is 08360-81610 but I can't find a spec for that to indicate the size. Thanks, Alan