What are you specifically looking to assess from a photo? Lowered floor pans are available in various drops up to 3", most are angled front to rear so as not to create a lip and thus allowing the seat to still slide forward. Similarly some folks just cut the existing pan sides and rear bend it down and metal to fill.
For a fixed race seat the rake will be important if you don't want to alter the rake and the seat doesn't need to slide then I suggest a full drop true pan that lowers the front and rear.
Google 'Pantera dropped Floor Pans' images and you'll get a good cross section of solutions.