Sorry i didnt get out of work until late last night didnt have the chance to check i will tonight. I know for a fact that 2005 rear seats bolt into the 2004 rear in the hatch models.
Everything in your car should work fine when pertaining to the front. the 2000-2004 models did not have passenger side air bag weight detection. I have momo racing seats in my 2004 and i just had to take the seat belt buckle from the stock seats and plug it into the current harness. As for the heated seat option you are going to have to wire that manually unless you currently have heated seats.
In my 2005 i do not have heated seats but i bought recaros that do so i am going to just wire them through my fuse box and mount a switch.
so your last question is will the rails work for the front correct? is there anything else i missed?
2004/2005 Ford Focus Saleen
The cops are here to keep us safe.............I'm here to keep them busy!
Hatch Nation #43