Ok first get your self some evo arm's if all bushes are ok then use but if not replace makes sense to whilst they are out .
take them to a machine shop and have 3mm taken off both sides of the big bush the metal part in side the bush on both arms .if no machine shop then you could grind them down .but milling is better then you are ready to fit just take out your old ones and refit the evo ones in job done then just get the tracking reset and then your good to go
o and when you get your evo arms make sure they have the drop link bracket very important as airtrek ones are welded on