two weeks ago I got a panel from Sailors Exchange,Used Marine Consignment Store
it is new and made custom for Hunter
boats with a Genset sounds like what you are looking for, the panels
are new and I believe he got them as over stock so much cheaper. you may give them a call they also have a ebay store.
The panel I got was $300 so I beleive it mis much cheaper.
I also seen some very nice panels
made by Blue Sea that would meet your needs.
Im my option any panel shop can make what you need, Myself I make myown because every panels I have ever seen are made for general use so they are either missing something I want or have added things I do not want.
Best of luck,