Here are pic's of the TechnoSump installed.
As you can see, the sump doesn't protrude lower than anything else and is roughly even with the rest of the underside of the car. I am not too worried about driving on the street, but I could imagine the front side of the sump acting like a plow and picking up a lot of dirt/grass/gravel during an off course excursion.
Replaced the brakes and trans fluid yesterday and will do the plugs today. Might as well get it all done as long as the car is up on the lift.
Sump install;
Nothing sticks out below the level of the bottom of the car;
But its not very far recessed either!