Here is an Ebay auction for a pair of used Hipo exhaust manifolds by Ebay member "shelcobra" with a starting bid of $475.00:
1965 1966 FORD MUSTANG 289 EXHAUST MANIFOLDS HIGH PERFORMANCE K COCE FASTBACK COUPE OR CONVERTIBLE They will need some repair work. The exhaust flanages will need to be fix and rethreaded For studs Also left side manifold Looks to have a crack On the backside. These hipo manifolds Are very reparable.** C30E 9431-B AND C4ZE 9430-A Date codes Are matched K-2-4 ** LOOK AT THE PICTURES FOR MORE DETAILS ** FIXED SHIPPING CHARGES WITHIN THE US 48 STATES ** 1965 1966 FORD MUSTANG 289 HIPO EXHAUST MANIFOLDS HIGH PERFORMANCE K COCE | eBay
-Fred-
This pair of used Hipo exhaust manifolds received no bids by June 6, 2023 and therefore did NOT sell.
-Fred-