I agree it's hideous. As far as the exhaust, it looks like maybe there was no other choice - the text of the ad says the floors were lowered and the pictures of the interior do look like the seats are much lower than stock. If they sheeted across the bottom of the outriggers, there would be no where to put mufflers which forced the side pipes? Just a guess.
The top-down pictures remind me of VW Beetle converts that you could not see out the back of. If it was a roadster where you just removed the top, and if the interior was like stock, and if it didn't have the side pipes, and if it had a different paint job, this might be acceptable....