SeaCraft made a 20' hull in CC, Sceptre runabout and
Seafari cuddy cabin models, and a 19' Bowrider, an 18' CC model, and a very rare
15' Scampi runabout model, but they never made a 16' model, so I doubt you have a SeaCraft unless quoted length is wrong. I've also never seen a seat bracket like the one shown . . . they always used pedestal seats. Post a shot of the transom showing the 3 different VDH panels on each side of the hull if you want to confirm it's a SeaCraft.