PN FRUKC08-02 is a 2730 Turbo Raid Controller.
PN FRUKC02-02 is a 2730 Raid Controller.
If this is a Single Controller Enclosure, we can interchange these two controller modules. The Chassis-Midplane supports both 2730 & 2730T controller modules.
However, in a dual controller scenario, we CANNOT mix these two controller modules together. Both have to be either basic 2730 controllers or 2730T Controllers.
The PN can be read from a ssh session, use 'show configuration' to get a listing, under Chassis session look for the FRU part number and also under the RAID_IOM section.