wildcat

Hi Guys and Girls, i have a VP Commodore, its got WILDCAT headers, 2.5"HF Cat, 2.5" Cat Back mandrel bent Exhaust with a LUKEY muffler, i wanna go abit louder and was wondering if i just cut out my muffler and weld a pipe into its place, What do u guys think, will it sound good, how loud will it...