There's only 2 to be exact that are from the streetflight design. DDavis' and mine. Davis gained a lot of power from this design. It is 3" the entire length. It is not restrictive only having minimal bends, one at the tb and of course behind the bumper, which allows the power increase. Plus it is a true cai; pulling in air temps slightly cooler than actual outside air temps. This is it. not all that impressive to look at but it's 100%functional, that's the whole purpose.

And damn it sounds sweet under power...