66 abody frame

Ok guys I've got a 1966 valiant and the front frame rails are gone. What's my best options on repairing this disaster. Do I need a donor car or do they make rails?? This might just be a little out of my league and suggestions will help. Fyi this will have a stout 408ci with a 150 shot setting in it when all said and done so I'd like it to stay together.