Had one on my DP MR2 Spyder I built...all custom and stuff. I agree with the tuneability, though at times it was hard to find a bar SOFT enough!! Much lighter car though and I think that the Z would benefit since it is much heavier.
The arms, however, were purely custom (and very expensive!) Not sure how that would work on the Z, and should be looked into before jumping in! This was it about 15 days after being built haha...it changed a lot over time.
Tracy Ramsey