Yep going to get to work on all of what you've suggested Bonzo. Bushes first as that seems to be the most common suggestion.Would be worth changing all the fluids unless paper evidence shows they have been changed recently. Also springs, shocks, bushes and hoses may well be long past their best. Use the search button for 'tramlining' to get the gen on this. Also ask away here re any advice or technical help. Also google BMW VIN number to get the build spec of your Z3
Bonzo.
Already got the Build spec from my local BMW dealer. It has more bit info than what came up on www.bmwvin.com
to the forum from me too in Staffordshire.