Interchangable frame rails

Hi there,

I am starting a basket case '68 Barracuda fastback resto. The rails are rotten, especially the front ones. I have been told that any A-Body from 67-74 had the same rails. Then I have also been told some are different lengths. I am looking at a 73 Scamp to steal parts from and I am wondering if anyone knows, are the front rails the same as my barracuda's? Could the floor pans also be used? same with torsion boxes?

Thanks