I have install k&n filter,18'srims, paint my Calipers , clear bumper lights, tail lights.....

Now, the top 3 thing that i got in mind are drop, y-pipe, exhaust, but the reason i haven't done the drop is because In my drive way , i think it will hit if i drop it. Now, I really want an exaust but i don't want to be too loud. Should I just get an Y-pipe and put exausht tip?

 

Put a sweet sound system in there!
If you don't like that then drop it - don't worry about your driveway, you can always try to pull in at an angle.

 

Drop It.. Thats what i decided to do before i put on y-pipe or any of the others.. A Dropped max looks somehow more appealing to me