Best wish bones to buy

[BiG K]

If you are taking it to a garage, then going the replacement bush route will cost a bit less in parts and a bit more in labour.

If you're going for replacement arms, then parts will be more and labour will be less.

You've got a stage 1 remap + some other performance parts, so while you are here, grab some powerflex polybushes and for the P bush I hear Citroen Berlingo P Bushes are an upgrade, slightly stiffer bushes will get you handling that bit better.