Anyone had their cat stolen recently? I have so I tried this. Unbolt the bottom bolt on the nudge bars and lower them and drill new holes in the support brackets then bolt in new position. Thief can no longer get under vehicle.
Then purchase a 120db PIR detector (cheap) and attach it anywhere underneath with magnetic strip so if thief jacks up car and goes underneath it will go off and scare them off. Cheaper than a new cat