established it isn't my cv or wheel bearing causing the knock, used a massive breaker bar to undo the hub, but ruined the nut so replacing that too. picking up drop links tomorrow, and put a direct cold feed into the old drilled air box.
Splitter is currently having the monopoly money taken off and stripped of paint, ready for respray.
Then I will decode what to buy next, i.e the knock.... going to try powerflex front wishbone bushes i think. 2x tyres, balancing and tracking friday tooooo all money! got a ****ing warranty too!