Ok where do I begin I bought my car and one of things I need to do is cut out the floorboard because there is a rust hole as big as a baseball. So when I get my grinder do cut around the framerail or right through it? Because the part of the the rail where the rust hole is barely hanging on there. Please help me!

Look here: (and try using the forum search function in the future if you didn't know about it)

http://www.classiczcars.com/forums/showthread.php?t=17235

Floor board replacement doesn't replace rails however. Frame rails can be bought (engine area and underneath in front area of cab).

Oh ok thanks for the info I wasn't sure about it. How much do framerails go for?