Thanks to some advice from a few of you and another thread, going to replace my basic stereo in my 01 LS. Good to know if I replace the Kenwood tape player with a Kenwood deck I won't need a new wiring harness. Any specific model recommendations?

Also, going to buy 4 of the polk 651 speakers to replace the crappy ones that came with it. Do I need hte 651 or the 651s (slim fit)? Any help appreciated.

Do I need any special tools to take out the old speakers and install the new ones?

Readily admit I am not into big sound and just want a better basic make-up.