Well the stock set up has 6.5"s in the doors and 2.5"s in the dash. If yyou buy a different setup, you will most likely end up with the 6.5"s and 1" to 1.5" tweets. The tweets will have to be mounted with a bracket that will fit over the existing hole. Any car audio shop should be able to set you up with those. Don't be scared of the wiring. All you have to do is connect small + and - terminals to the end of the wires that you cut and plug them onto the + and - on the speakers. That's the easiest way I can explain it. Super simple bro! Now, let's see. Aftermarket component speaker set with tweets with about 25 - 30w RMS.... HMMM... Here's a few ideas
Alpine SPS-600C Type-S 6-3/4" component speaker system — fits in 6-1/2" or 6-3/4" openings at Crutchfield.com
Focal Access 165 A1 6-1/2" component speaker system at Crutchfield.com
Focal K2 Power 100KRS 4" component speaker system at Crutchfield.com
All of these have ratings from 2 - 80W RMS I'm sure that they will work. Just a matter of taking a look and seeing what impedence they are (2ohm,4ohm,8ohm etc.)