I just received my Base 2012 Mini yesterday and after verifying that it works, I replaced the HDD with an SSD.
Bootet, received a boot error. So after some trying around with command+r I finally ended up to boot with the option key, formatted the disk and performed a clean installation (from internet download) of mountain lion. Worked pretty well...
Seems to be the easiest way in my mind. I do not have an external case or whatever to do such things.