In non-critical applications use whatever fits. What's the worst that can happen? In this case your headlight assembly would maybe vibrate a bit if a bolt broke. Even that's unlikely.
Not sure on these Daytona's but most bikes use a 'tongued washer' to lock down the ram air to frame bolts. I'd avoid skipping those if possible. Link has photo.
Not sure on these Daytona's but most bikes use a 'tongued washer' to lock down the ram air to frame bolts. I'd avoid skipping those if possible. Link has photo.