Wanted: Modern 2x Blue Whelen Century TIR6 Inboard Modules

I'm needing 2 blue TIR6 inboard modules for a Whelen Century bar build. Part number 01-026E055-20A. The part numbers are odd on these and don't make sense at a glance. I verified this is the correct part number for the blue module and not the amber module, which oddly enough ends in -10B.

Thank you, in advance!