frame rust question

Hey everyone, obviously i am new here and im sorry if im not asking this in the right place. is it very hard hard to replace frame rails on a 67 barracuda? i found one for sale, pretty rough but very salvagable in my opinion. i have been around cars most of life, know a my way around cars but not very good at welding yet, was gonna learn on this car if i could. thanks all and sorry for the spelling!

These work great !!
Very easy to install, made to fit perfectly.
You will be able to save it with these, no problem.
http://autorust.com/store/index.php?main_page=index&cPath=2&zenid=ed98107a19926aec6b61ba46525feb69