Hi,
So what happened to 1 year warranty? Did you buy it used or new? If you bought it new, I might be able to help as we are authorised dealers in UK. Feel free to PM me.
Genuine Nissan ones in stock, way cheaper than Nissan UK
http://www.torqen.uk/nissan/350z/wheels-accessories/hubs/955-350z-nissan-oem-front-wheel-bearing-hub-assembly-40202-al56c.html
I promise is not me, it's the drone, trust me, you need to upgrade!
Why not an used Phantom 3, there are lots for sale within £600 budget with spare batteries on eBay or Facebook groups.
http://www.torqen.uk/nissan/370z/brakes/discs/1071-370z-dba-5000-t3-series-2-piece-slotted-rotor-set-front-2pc-sport-akebono-dba52314blks-2.html
In stock, best price in UK
This is also an option:
http://www.torqen.uk/nissan/370z/exhausts/test-pipes/438-370z-ark-r-spec-test-pipes-tp0900-0010.html
In stock ready to ship for next day delivery
We have the Stillen in stock, ready for next day delivery: http://www.torqen.uk/nissan/350z/exhausts/y-pipes/56-350z-stillen-stainless-steel-y-pipe-504252.html
They're on sale for the forum members until the end of today, £295.