Sean05 wrote ok first thing is a lot of people here did the cut out from the bottom, I DID mine from the top to so when my car hit the lift it wont show at all.
2nd if your going to cut all perforated pipes and replaced it with straight pipe SHIT is going to be SO LOUD and drone will be there.
3rd i would put just cut the bigger perforated pipes out and have your 2nd CAT DELETED. and call it a day...
this way no drone and exhaust note are going to be a beast with a little power from removing the 2nd cat not much but yea it will make a difference.
EDIT: yes 280 is duable I PAID 250 WITH MINE.
I did all four of my perforated pipes... I didn't replace with pipes but still covered all of them... I did end up gutting my cats also... I cut it from the top. and just painted it back silver. It does not drone like the way you are describing it... It also sounds very good...