1st job is to replace front and rear anti roll bar bushes. Replace with poly bushes. Rears are easy and can be done without jacking the car up. http://www.elkparts.co.uk/
The fronts are more difficult. The rearmost bolt is hard to get to. I borrowed a 10mm spanner that had socket type ends, otherwise I don't how to do it.
These replacements make a marked improvement to body roll. After that count the pounds