The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is soliciting proposals for the repair and modification of engine instruments, identified by part number 9D-84051-11, with a quantity of eight units. This procurement is classified as a sole source requirement, indicating that the government does not possess sufficient data to contract with any source other than the current approved supplier, necessitating compliance with the NAVSUP WSS Source Approval Brochure for potential bidders. The items are critical for maintaining operational readiness and are governed by strict quality assurance and packaging standards. Interested parties should direct inquiries to Samantha Freedman at samantha.m.freedman.civ@us.navy.mil or by phone at 215-697-6566, and must ensure all required documentation is submitted with their proposals to be considered for award.