Mate, I wouldnt bother replacing it, the majority of us on here have had them come off anyway, as thats what they tend to do....as long as your car aint superlow, you will be ok without it.
Were can you buy one from (OEM) except from the stealers? mines bowed down abit and hits the Speed ramps. (only slightly) i dont wanna take it off incase i rip off my sump.