Corey, you're right, it'll be a trick mounting your existing bracket. I saw one possible solution on the Firestick site, a bracket made for a trunk mount but looks like it could work just as well on the trailing edge of the hood. You'll have to measure the cumulative height of the bracket, spring and quick disco to check for open hood to windshield clearance.
http://www.firestik.com/Catalog/K-74.htm