Use 5mm allen wrench to lock strut bolt so i won't moving around. Take out a lug nut with 14mm wrench. Remove washer and put some where safe for later.
Take out rubber bushing with flat head screw driver.
Insert new bushing right away before strut bolt start to change position. You will need rubber hammer to secure the bushing down. (If the bolt is already moved or you can't install new bushing, you might have to jack up the car.)
Put oem washer back on then rear strut tower bracket and put new lug nut that come with the kit.
Now do the same on on other side.
Make a hole for trunk liner so we can pass strut tower bar through. Length on rear strut tower bar is adjustable. Lock everything up on both L/R side.
Double check everything. Make sure all bolts and nuts are tight!