Uh, MY99, DMS Golds are coilovers. Rebound and damping adjustable, as well as height. They're $1800 because they rule!
Sounds like a bigger rear bar might be in order first, then get fancy with stuff like the Whiteline kits. I went to a 19mm bar on my wagon, so that both front and rear bars are 19mm.
And check that front camber.
Kevin