I already have the clutch cover and bungs. After Costas threw his K down the long Greek hill I went out and bought the clutch cover and bungs the next day. Well, the day after he put the piccies up. Don't know if it will work if I ever bin it and hopefully the bungs will stop things getting that far.
Bungs are a godsend in a slow speed spill or a car park drop (steel car ferry deck in my case) but they are of dubious benefit in a high speed spill; reports of frame damage caused by the bungs were rife a few years back.
Yer pays yer money, or logs into PayPal and takes yer chances.