What is Dell saying? When the array went offline and you imported the foreign disks, you may have lost your best opportunity there for a full recovery.

Secondly, please understand that most applications have no idea whatsoever of the physical configuration of the disks. Most RAID implementation are proprieatry in nature. This is the reason why you can't take use an Adaptec controller to replace an LSI one and expect to just be able to see your data.