Yamato and Musashi in the Guadalcanal night battles

What if Japan sent Yamato and Musashi instead of Hiei and Kirishima to Guadalcanal?

The Yamatos could inflict much greater losses, but close-range American gunfire would probably maul or mission-kill them as well.

Armor designed around long-range shell behavior offers less reassurance when 16-inch guns strike at near point-blank range. Washington and South Dakota might also suffer heavily from 18-inch hits, making the exchange far bloodier than the historical action. In the earlier cruiser engagement, Yamato's optics and enormous secondary battery could punish American ships, though the Japanese vessels lacked the later radar fit sometimes associated with them.