lost on an
Join Date: Sep 2011
County: Australian Capital Territory
A potentially important point to understand is that by lowering the car you'll increase the negative camber with the way the wishbone geometry is set up and that design has no built-in adjustment to correct for this. To fit wheel spacers as well will also change the steering geometry a fair bit, so you'd be a good case study for the effects. A wider front track on a FWD is not an uncommon mod. After market wheel spaces are not legal in Australia, where I am. Whether that is a case of the nanny state or it reflects the consideration that all wheel movements are placing greater torques on the hub, I don't know.
Depending on how old your car is, fitting coil overs may be a good idea as it could be time for replacing the dampers anyway.
On concern with coilovers is that the minimum job does eat into your ground clearance. The 159 is worse in some ways due to the longer wheel base, but it is pretty easy to scrape over kerbs. So it would be worth getting Danman's opinion on that. If you have no kerbs or speed bumps in your life then go for it.