Adding door speakers

[j.fro]

My thoughts were to just buy 2 new door panels with the OEM speaker grille and boxes

I would delete this idea. The largest speakers you can get in the factory boxes are 5" round. Even if you are using the factory stereo and amp, a 6.5" or 6X9 will sound much better. For the factory stuff, I think you need 2ohm speakers to work properly. Infinity Kappa's will work with the factory stuff and sound nice.