i don't know about the 240k struts,but 200b struts are shorter than stanza,which allows for a lower ride height.my first brake conversion used stanza struts cut down about 75 mm(3 inches),only to find 200b struts shorter still.as for removing the spring perches,it's easily done with light hacksawing of the weld holding the perch to the tube.note,that's LIGHT,don't cut into the tube body,you just have to break the weld between the perch & the body,then gently tap the perch off with a hammer.