Zedd findings is showing new non-aftermarket rear valences on their site. I emailed them about it.
Were the new one required to be rolled as well? Or only the aftermarket ones?
Either way, a competent body shop will be able to do this for me.
It would be nice to get the new part and have someone make it out of fiberglass for me, though... I'm sure it wouldn't save much in weight... but at least it would be easy to fill the bumper holes and modify it for whatever size muffler hole I need, etc...
All of this can be done with the metal piece before it goes on the car, anyway. Thats my plan... have to shaved and ready to go on. (unless of course it needs to be rolled... wouldn't want to shave it and then roll it, everything would buckle out)