Just how STIFF does one need an E-body? They weren't done from the factory, even with the 383 or more engines... Jsut asking is all - mine only has a lowly 318 - no need there!!
You'd be surprised. While it may not be necessary to keep your car rolling down the road, I bet you'd be surprised just how much better the car will handle with them. And the factory was a long time ago. Rust, metal fatigue, and wear and tear mean that these cars flex more now then they did before. A 318 may not pop any of your windows out of place or crack your paint at the seams, but you are giving up handling. I don't have them on my car yet, but I've seen and felt the difference, and its not a small one. Needless to say they are a "must do" for me, and high on the list (even though my car is also 318 powered).
Besides, in an accident, do you really want the weakest part of the car to be where you're sitting? A lot of things weren't done at the factory, but you have to remember that the biggest key for the factory was dollars, not building the safest, best handling car out there.
These aren't new cars, and there's a lot of room for improvement. Frame connectors, larger brakes, and better tuned suspension are all safety items as far as I'm concerned. The better the car handles, the more likely you are to be able to avoid an accident, or, God forbid, survive one.
