My 'bird has a 400. I never even noticed until I had the exhaust system installed last spring. Once I saw the car from underneath it just didn't look right! It's good to know it's not something to fix.
It seems that there would be additional stresses on the front universal joint due to the geometry. But mine are still intact, plastic and all.
Vikki 1969 Goldenrod Yellow / black 400 convertible numbers matching