Hi SifusI found e46 m3 seats (electric) and e39 mtech/sport seats (electric) and will like to know if:1) either option can fit nicely into my e36 sedan?2) Which one needs to mod the seat railings?3) Was told the e46 m3 seats weighs 70kgs each (damn heavy coz of the elctronics) - true?4) What is the weight of 1 x e39 mtech/sports seat?5) Anyone has pic of e39 mtech/sports seat Thanks