I may be able to do a crawl under the car this afternoon. I've got a bad scraping noise and I want to check the plastic things that hold the rear torsion bar. Is this part pretty obvious from underneath once the car's been jacked up? Would grabbing onto the torsion bar and trying to move it around show me if the plastic parts are indeed broken? I probably don't have the time to fix it if this is what's broken. If this proves to be the part making the scraping noise, can I still drive safely although I'd guess handling wouldn't be up to spec.

Thanks for any advise.