CREATE TABLE table_24628 ("Year" FLOAT, "Starts" FLOAT, "Wins" FLOAT, "Top 5" FLOAT, "Top 10" FLOAT, "Poles" FLOAT, "Avg. Start" TEXT, "Avg. Finish" TEXT, "Winnings" TEXT, "Position" TEXT, "Team ( s ) " TEXT)

Name the max top 5 for avg finish being 27.6
SELECT MAX("Top 5") FROM table_24628 WHERE "Avg. Finish" = '27.6'
SELECT MAX("Top 5") FROM "table_24628" WHERE "Avg. Finish" = '27.6'