No an SSD would not improve another SSD performance with drive caching, moreover if you have a real SSD drive caching for your HDDs is not worthwhile IMO. Use the 60gb drive in a laptop or as a scratch/program drive on your new build.
Thanks for the answer. I did a little more forum digging and saw someone else ask this question a while ago. Looks like it might end up being a drive for my EA Origin files or something? LOL I could put it in my laptop, but it really gathers dust now that I bought an IPad. Talk about making my laptop obsolete.