Printrbot LC and LC PLUS stabilizer

This is a simle stabilizer design for Printrbot LC and LC PLUS ,this litter gadget will make the hole frame much more firm! And also make a mounter for the extruder ,just see the photo.
BOM : print stabilizer *2
M8 screw * 350mm * 2 (at less 350 mm long longer also OK )
M8 nuts * 8
washer for M8 * 8 (optional.)