Hayden9009 said..
yes it came with a mast base the only thing it was missing was the fin. also where can I get a us box fin?
You can get one in any good surf shop. You should chose something like freeride shape, about 30cm. anyway in US Box, nothing is bigger than 33-34 cm because the box cannot handle more side load. On this big race board, the rails are taking part of the side load, that's why you can get a decent size of 30cm. The Select B&J have a very nice behavior on shorter board but plenty of shape/brand exist.
plettil