Exhaust/Off the line power

Alright im finishing off my exhaust friday with 2.5 piping, high flow cat, a ubend replacer, i know to get them to change the o2 sensor, and i already have my mufflers put on, anything else i can do to make it louder?

and anyone have any idears for me for some hrspw. and or trk for off the line???? give me a little jump up there, or smoother shifts??

Um...you want it louder? Why? If you want it louder, you're gonna need to replace your downpipe and put NO cat on at all. Did you remove your resonator?

And you want smoother shifts? I'd think you'd want firmer shifts ;) There's not much you're gonna be able to do to your exhaust to get more horsepower out of your car, especially with no other supporting mods. If you go any larger in your pipe diamter, you're gonna lose off the line horsepower.