hit it right on the head i had the same issue on my integra i actually ordered all brand new bolts from honda when i replaced mine tho i didnt want to take the chance of this happening again the bolts are like 4 or 6 each just something to think about.
if you use old bolts then your going to be right back in the same boat when it comes time to install new full coilovers or you want to upgrade your lca so why not have something new in there that wont rust out?