Hip Hop Aputumus

I have a 2002 4 clylinder Accord coupe. (I know, not the ideal wrx sti) But...that aside, if i were to drop the money on headers air intake etc etc...what would my maximum hp output be? would it even be worth it? would i even notice a difference? could i reach 250 hp w/o hurting my car? how much money are we talking here? could you list some specific products i can look at?















thanks