Ya wow that sucks. I’ve messed around some with RAID, I’m no expert on recovering a screwed RAID0, but as far as I know your only option is to rebuild the array and thus lose everything. Now I could be wrong here, so don’t take my word as gospel, but I think that’s the case. That’s exactly why they have the other RAID levels, so you don’t lose the data. RAID0 isn’t reliable, you should always have anything on a RAID0 backed up right away if it’s important to you, especially if your gonna mess around with your hardware adding things like new HDD’s. There could be some software that may help you, but I don’t know what. There’s also companies that specialize in data recovery of all sorts, but that’s probably very expensive to do.
Sorry man, all I can say is in the future, don’t trust a RAID0 array with important stuff, hard drives fail enough as it is, and now you have 2 that both need to work or your screwed. Personally I back up anything important from my RAID0 almost immediately. You should try google and see if you can find anything, or… I’m hoping someone chimes in and proves me wrong, cause I feel for ya. Good luck with that