You can keep your gauges and just run a set of tweeter in the corner of the stock speaker mount plate.. That's what I did. Very discrete. Look at the corner grill. Just take your time drilling the hole the dremel it out to you liking.
Just got some lids myself, went with the Hertz HCX and Arc Audio amp.
Still waiting for paint, so haven't got to hear them yet. Have JL 5x7 components up front, powereed by an Arc amp. Should sound good.