Yu must be referring to my post from this morning...
All the Headlight housing will fit on the 01+ Sedans and the P5's and will interchange Phsically...But as stated..the bulbs and wiring is different.
BTW...Other than to be different..Why would you want to put the P5 housing in your Sedan?
The Sedan Light output has a much better pattern then the P5's and IMHO..looks much better as well....Hence Why I am going from P5 to the Sedan Dark housings.
I really like those head lights for some reason, always have since i bought my car. So as far as the wiring how difficult is it to wire in the connection for high beam. I didnt realize that the pattern was better then the housing I currently have. Never seen the P5's at night.