you could replace the axles, then youll have to raise it. and you could replace the oil pan as well, which wouldnt hurt anything as long as you do the axles and raise the car as well...this way you wouldnt have the chance of hitting it since the car would be higher.
its not uncommon to weld extra metal to the bottom of your smashed in oil pan on a vw. if i ever get the mk3 i want, the oil pans coming off, getting cut shorter, and a thick *** piece of diamond plate is getting welded onto the bottom...as well as a shorter oil pump haha.