thx all, yea my cousin also mentioned something about using a SS pipe on his E36. but idea fadded out as we didnt persue., he mentioned he knew someone who is working with SS in his factory.
@samivoodoo
We got hold of mitshubitshi stuff from Peshawer yards. i am sure there is SS stuff there, but its lot of hunting and bargaining and time involvment. though SS pipes sound bit smooth than steel, not doubt there:)
@fahad
those people near railwaystation work with steel or stainless steel chrome finish?
steel is already what cars exhaust use, i was talking about lightweight stainlesssteel and smooth finish on the inside too