It’s a good idea to clean out the threads in the frame for the mounting brackets with some spray lubricant (such as WD-40) before installing the new bar. The new bar attaches to the frame in the exact same way as the old one coming off in step three. If the car didn’t come with a stock swaybar, the holes will probably be there anyway. You may need to clean them out. Worst case, you’ll have to drill new ones using the bracket as a template.