The right lower brackets still looked parallel to the centreline, even thouth it's hard to gauge it. So I made jigs to weld the opposite brackets parallel to those two:
I also replaced the rear upper wishbone bracket, as it's been bent to the outside by ~5 mm. Cutting the old bracket out was tricky, but possible.
Afterwards I painted the new metal, then it took me 3 nights to reassemble the car from this state:
And I mean nights, from midnight till 5-6am! But I had it done in time for that slalom event!
http://www.youtube.com/watch?v=cbR0QetHxIs