RZRX7TT

Hey guys i am having a tough time finding ramp extensions for my ramps. I have ramps that are 10 and 3/4 inch wide, and all the auto stores that i have checked into in my neck of the woods here in Canada have ramp extensions that are only 8 inches wide. So anybody know where i could find ramp extensions that would fit my set of ramps? those of you that have ramp extensions what width are you using? my tires are 245/17 on the front. Your help would greatly be appreciated.