NASA/MSFC requires development and delivery of hardware and firmware for the Lunar Node-2 payload, with emphasis on a flight-ready payload within 90 days while preserving existing physical, electrical, and software interfaces. NASA intends to issue a sole-source contract to Amergint Technologies Inc., a wholly owned subsidiary of CACI, Inc.-Federal, under authority reserved for only one responsible source. Amergint is uniquely qualified as the designer, developer, implementer, and owner of the SWIFT-SLX platform, enabling use of existing proprietary hardware and technology to meet the accelerated schedule without interface changes. The procurement may include studies for two-way coherent ranging, rework of an existing SWIFT-SLX delivered to MSFC, current EDU and flight-platform builds, a new EDU, and upgraded firmware to enable S-band two-way coherent ranging on the LN-1 SWIFT-SLX radio. The effort supports preparing the payload for a future flight opportunity and would use existing Lunar Node-1 hardware where applicable.