International Lancia Forums

I,m in the process of replacing some undersill sections on my S2 1600 HF .These areas are around the front and rear jacking points .I have made new jacking points and would like to find out their correct positions in relation to [a] the dimension from where the front and rear wings join the underbody to the edge of the jacking point the dimension back from the inner wheel arch join [c] which way round should the jacking points be welded on i.e.with the flanges in line with sill or at 90 degrees to the sill .
Any help with the above sizes would be very much appreciated