So I went to my local parts place and got 1 ball joint it would go on it was normal right hand thread .And this ball joint is left hand thread they wanted £68 for the arm I got it off eBay for £38 roughly so I got 2 and did both sides ...I put loads copper grease on both threads as they do seize so well worth doing that then had my tracking done at £20 cash .I have a good selection of ball joint breakers and they took so.e hammering to get off so if you attempt this at home make sure you have the fork style ball joint breakers and a 3 lb hammer ..