Some of these pics will show the bolts on the 4 corners of the seat's bottom frame/rails. Some of these bolts will be hidden underneath removable panels. I used a 7/16 and 15mm socket to remove these. Should be easy enough. You'll need various tools and sockets (metric went up to 18mm and std. went up to 15/16). I also recommend that you test your final product before you install the seat. I did this and found out that I also had to cut some of the spring. Do a mock trial on the floor to test out the mod to make sure you cut enough off of the spring.