CREATE TABLE table_30463 ("Stage" FLOAT, "Winner" TEXT, "General classification" TEXT, "Points classification" TEXT, "Mountains classification" TEXT, "Young rider classification" TEXT, "Team classification" TEXT)

When svein tuft is the winner what is the highest stage?
SELECT MAX("Stage") FROM table_30463 WHERE "Winner" = 'Svein Tuft'
SELECT MAX("Stage") FROM "table_30463" WHERE "Winner" = 'Svein Tuft'