i'd say drill it, i don't think you can get a old type nutted brake that will work anywhere near as well as a dual pivot. what's more important having brakes that work or drilling your frame? you only have to drill one hole to 8mm anyway, it'll barely be noticable.
i'd say drill it, i don't think you can get a old type nutted brake that will work anywhere near as well as a dual pivot. what's more important having brakes that work or drilling your frame? you only have to drill one hole to 8mm anyway, it'll barely be noticable.