This is an Original pair of 1966 Ford 390 Exhaust Manifolds.  Pretty good condition, some pitting in areas, didn't see any cracks-see photos.  Couple of threads may need some cleaning/chasing-see photos.  Mercury book shows these fit '66 Mercury Comet and Montego w/ 390 engine.  Will also fit 390 Ford engines, but Not sure of exact models or other years or other engine sizes these may fit.  Please check my other auctions.