8 ohm factory speaker

The 3 1/2 inch center speaker in my Ford Taurus shows 25 watts / 8 ohms and I would like to replace it. All the replacements I find are 4 ohm and rated at various RMS. Such as this 5 - 25 RMS Infinity 3002cfx. According to this website, Speaker Impedance vs Power Output, it appears that 25...