Some "BRIGHT" person welded the front fenders to the body...anyone have the best way to cut the weld?

Picture here of backwoods work
http://imageshack.us/photo/my-images/825/dsc04469e.jpg/


1948 Chevy 5 Window 1/2 Short Bed
1969 Dodge Coronet SUPER BEE 383 Ramcharger
1949 Bentley Mark VI Standard Saloon
http://imageshack.us/photo/my-images/695/dsc04398mm.jpg/