DAP had them at one point.. Yeah expensive too!! $600 but they were fiberglass. I have them on my Rovski... I have long contended that a flexible set built for a jeep or truck may fit just well enough, as long as you can find a shop that stocks them and is willing to let you test fit them.
PS don't forget you will need to cut the existing fenders to make room for the widers tires, which is ( i am assuming ) why you need the wider arches..
Hey they have some for $200 now.. You may need to cut the rubbing strips as well! The ones I have go for $550
DAP LINK