Early 2008 MacPro-internal optical options?

Hi all,

We have an Early 2008 MacPro 2.8G 8-core. it requires an IDE internal optical drives.

our OEM superdrive reads, but cannot write anymore. we've been getting aroundt his by DVD-R sharing (or file transfer first then burn) to MBP, but it's a bit painful.

I've looked at the usual suspects... Newegg, OWC... and they don't seem to carry IDE superdrives anymore. I even looked at eBay... didn't see anything that seemed ok.

All of our USB ports are used (heavily), so if I can avoid it, I'd like an internal option to replace our superdrive.

we're open to "upgrading" to blu-ray/DVD-R/CD-R, if adding the right expansion card will make it work without sleep/wake problems.

Anyone has done anything? or is it too late that I must go to external option?

currently it's using SnowLeopard, but in the near future we intend to upgrade to ML. so if the firmware requires ML, it's ok.