what would a 95 sound like with cherry bomb turbos or 50 series flows with only one cat per pipe. it has aftermarket shorty headers and true duals to what looks like stock mufflers and out of 2 nice chrome bells. it now has 2 cats per pipe. and it also has 4 o2 sensors 2 behind the last cats and 2 screwed into the headers. why is that can i disconnect the 2 last ones when i delete 2 cats.