Bear in mind that 916 types are group 17 bikes (out of 17 groups) whereas your monster is around group 12 or 13.
What they'll do is insure you for the 916 as the most expensive item and your monster as a second bike,you'll be in for a bit of a hike whatever but many people do that.
Try these,I had 3 Ducatis insured for the road at one time with them.
http://www.ducatiinsurance.co.uk/