race seats + water leak

Did any of u guys fitted race seats to zetec? I cant do it, dont know what to do with airbag sensor, i was thinking to get sparco brackets but seat rails are not the same hight, don't know what to do if anyone got some experience pls let me know, also I passanger side floor fills up with water every time it rains, did anyone had same problem? :

[zetec]

Never had that issue with the rain at all, however there is a fix commonly known at Dealers, so please take your car in to Ford to have it fixed.

As for race seats... it's not a race car!!! Haven't met anyone who's done that yet, it might work out better to get them re-padded and rebolstered on the original rails and frames for safety reasons (and maybe insurance?)