Short mounting depth DVD drive?

[NDJeff]

I'm looking for the shortest mounting depth DVD drive that I can find, I believe the Pioneer drive I have is around 180mm, which is way too long. My top-mounted triple 120mm radiator causes me to lose the top two drive bays. If I can find one short enough I will be able to reclaim at least one of them (and use the other for my X-Fi front panel). Anyone know of any opticals that are shorter than average, perhaps meant for HTPC or SFF cases?

 

[Cobolman]

I understand the Lite-On (Liteon?) drives are about as short as you can get, and they run 170mm.

I'd triple-check before ordering, but at least it's a start.