There is enough straight frame on the top, but the frame gets thinner as it goes back. So the bottom of the frame wont match up. on the pic the 2 white lines on the op of the fame are 14 inches apart. you can put the first cut a little further forward, but you will still be in the skinny part of the frame in the back. And like pyro said, you will have to move the front spring hanger. hope that helps!
I just realized I basically just repeated pyos advice. It must have been good

but I had a pic