Lower profile dust cap?

Ok here is my problem, I picked up a cheap set of 17" mustang wheels and tires to throw on the truck for the time being. They fit great yada yada, but the only problem is that the center caps will not go on the front wheels due to the dust cap being to big. I just wanted to check to see if anyone knew of any lower profile caps of a different vehicle that I could use...If not Ill just go at them with a hammer i guess.