it wont fit your 05' because of the different throttlebody. Yours is drive by wire and the 03-04 is not. There are like 2 LOOOOONG threads over at
www.****************** about this. Supposidly AEM is releasing a cold air intake in about 2 months for the 05' S and XRS.
As for deap and throaty tone... thats what you will get. Not deep like a mustang rumble, but it sounds nice. It sould give you about 5-7 hp also.
EDIT: they blocked the link, its www. 9th gen corolla. com (without the spaces), check it out.