Bruce, Nice boat! Good luck with the finalization of your purchase. Your plumbing will probably be Quest but from the picture it looks like the manifold is actually the problem and I may be wrong it's hard to tell. My manifold was made by Gardenia. You could probably use any manifold if you can't find one anywhere. Search online you will likely find something. You didn't post where you were but sometimes you can get this kind of hardware at an RV supply too. Len Mitchell Crazy Legs 1989 37+ Midland On.
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