The brackets that came with it weren't used at all. The Z4 looks/fits best with the coolant reservoir from the 335d. A bracket was made for tank with the bracket that holds the vacuum canister since they were moved and not needed. The bracket was cut. Not hard. With aftermarket outlets on (purchased elsewhere since they don't offer them), the inlet sticks up a little more but that isn't problematic. I used these with the 1.75 to 2 inch adapter and in order to get the rear tube on the turbo I thought the wastegate had to be taken off but the adapter itself blocks 2 of the screw holes when reinstalling. It would be cool if the kit did not include the brackets and include the 335d tank. The car does sound a lot better. You can really hear the turbo spool now. I will say I don't regret getting these one bit. There is some manipulation involved depending on your setup but it will work. Order the tank if you are getting this for a Z4.