NASA Ames Research Center seeks sources for a firm-fixed-price, single-award IDIQ contract to manufacture replacement model support systems for its Unitary Plan Wind Tunnel, copying the original designs. The contractor will procure ASTM A668 forgings, perform machining, precision grinding (to .0005–.001 inch tolerances), heat treating, inspection, and ship parts to NASA ARC; each system includes over 122 parts, with the largest up to 99 inches long and 1400 lbs. The period of performance is five years (60 months) from award, with tasks defined via FFP task/delivery orders. Interested parties must submit capabilities and qualifications for evaluation; the NAICS code is 332710 with a 500-employee size standard. This is a sources sought notice for planning only, not a request for proposals.