Those spoon calipers won't fit DC2 hubs without some slight modification.

If you had 5stud then straight bolt on. For 15' wheels you need at least 15x7 +35 offset to clear spoon calipers without spacers. You can use 15x6.5' +38 or +40 with a 8mmspacer and it'll clear it. It also comes down to rim design.