Here is a video clip of my dad cutting the floor pan, featuring my brand new angle grinder, which, I might add, worked perfectly for this job. Cutting floor pans is not an exact science, you can be sloppy and still be alright at the end of the day. The floor pan itself was more than enough to cover the areas of rust, so we cut it to fit better and because we didn't need all of the the new pan. It's nice to know that even if it looks rough or ugly it's all going to be covered in primer paint and then padding and finally the brand new carpet, hiding all the imperfections the new floor may have. When it comes to the floor it isn't about the looks.