i have the ss ...mods are k&n 2.8pulley 60#ers h/e pacesetter header 3inch downpipe, soon gettin the custom tune... but now i dont know if i want to have a 3inch or 2.5 exhaust im getting mixed results about both so does anyone have any knowledge of what the best thing should be and why thanks

 

with a setup like that, there is no need a 3" set up. Iiiunno if there is a 2.5 exhaust system that will hook up with a 3" dp...cant remember. But if u can, i highly recommend going 2.5, unless u like loud/annoying exhaust sounds. This was a header, 3" dp and 3" magnaflow exhaust from CIA. Not bashing them in anyway cuz they did a really good job. But soon as i put the setup on, i regretted buying it.