look for genmar risers or helibar replacement clip ons. I heard you can adj the angle too with helibars not just height like genmar. I got genmar but if i had to do it over Id pay more and get the helibars.
I don't know that you will be able to raise them that much. Swing your bars one side to the other and see how much clearance you have. I had risers on my F3, so I'll try to figure out where I got them.