Maybe your one of the unlucky ones that doesnt have an owners manual and doesnt want to search through the forums (how lazy), so powerbulbs.co.uk has a handy guide that will show you what bulbs you need for your 75/zt if you have normal Halogen lights.
Now to make life even easier for you, ive made a quick photoshop of the information for both cars (which is the same, but still its nice to have).
Hope this is useful to other owners.