You can't fit front spacers on the top of the struts longer than about 40mm (1'5/8) anymore than that and the CV joints will bind at full drop, I made brackets to drop the front diff carrier by if i remember 30mm (1'1/4) and have fitted 2" spacers on top of the struts. No problems with the CV's but the chamber is a little out, the zuk's a little twitchy at 70MPH but nothing serious
On the rear you will need a spacer between the diff and the top link to stop the joint getting damaged on full drop.