[Stumble]

The best place to get a gooseneck is actually with the original supplier of the mast and boom. Typically there is a sticker or engraving somewhere near the base of the mast, or at the deck that will have the mast maker and hopefully the extrusion profile. A quick call to the supplier is usually all it takes to get a replacement. For smaller extrusions these can run as little as $100, as they get bigger obviously the price goes up.

If you can't get an OEM part, they are not that difficult for a competent welding shop to fabricat. Figure 3-4 times the price of an OEM one going this route.