Here is a copy of jeffaary's post on CCC.
For more info on this subject you can go to the thread on Moparts.com, although that is a long (and disturbing) thread to read. I'll save you some time, here is what Dave from ECS says the improvements over the existing carpets are:
"I will say AGAIN...
New one to drive around without question!! Sorry but I'm over 40 now so it's all about comfort and useability. The 70's lucky to get out of the garage now as I'm worried that somethings going to happen to it.