Rolf I'm working on this right now and have a '95 ST with a gutter kit.
------ Follow up post added June 25th, 2012 07:55 AM ------
This has been a good thread. Some of the things mentioned in it pertain to the new striker pins that are needed, etc. but otherwise it is a straight swap - they take up the same amount of room as the ST doors, with the bonus being that the "tops" of these SW doors are actually already pitched in a little, so they make a great seal against the gutter kit.