NIH intends to award a sole-source, firm-fixed-price purchase order to Siemens Healthineers for upgrading two existing Siemens MAGNETOM Terra MRI systems to Terra.X at the NIH Building 10, 9000 Rockville Pike, B1 Level, Bethesda, MD 20892. The scope includes OEM platform upgrades, advanced 8Tx32Rx head coils, gradient performance packages, 24-hour onsite clinical education, turnkey rigging/mechanical installation, room preparation and RF/EMI shielding, and project management. Siemens Healthineers is the sole manufacturer and direct seller of the proprietary software/hardware upgrades, and no other vendor or distributor can satisfy the required structural, software, and engineering validation requirements. This is not a request for competitive quotes, but responsible sources that believe they can meet all requirements may submit a capability statement, proposal, or quotation for agency consideration. The resulting single firm-fixed-price award requires complete conformity to the schedule and itemized pricing, with all-inclusive pricing and no hidden, conditional, or post-award out-of-scope adjustments.