Put me Toyota emina in for a mot .it failed on nearside rear suspension ball joint offside rear suspension ball joint im trying to buy them but cant find them is it because its called some thing different in the book. it says front ball joints but no rear could u help me lee

Not if you have a ball joint separator. With out one it can be touch and go getting the tapered fitting out.

check the suspension ball joints and rubbers . Check the steering ball joints and the rack end bushes for wear. Any front end steering noise is a cause for alarm as it is indicating a part worn excessively and is ready to fail

please be more specific with year and model ,its not difficult to change these with a big hammer and some mechanical knowledge ,the reason i ask is some earlier toyota models had a problem with the lower balljoints as they were spring loaded and failed the MOT because they jacked the wheels up and the way to test them was the moving metal plate in the floor .

renew the rear springs

take part off then go for the spares

Ball joints can have wear without producing any noise. Even slight wear will be classed as an MOT failiure because ball joints are a critical component. The only way to check if the work has been done is to inspect the car afterwards. A new ball joint should stand out because it will be spotlessly clean. If you turn the steering fully to the right the ball joints may be visible or they may be obscured by the wheels. It is much easier to see them when the car is on a ramp. If you have not had the work done yet you could ask another garage or tyre fitter to check the ball joint for you. It is advisable to have your tracking checked after changing a ball joint. Some tyre companies will check the tracking for free and charge only if they have to adjust the tracking. Hope this helps.

get them repaired ??

it should not be to hard give a shout if you get in trouble

just the four bushes or six including roll bar.

You need to get or rent a ball joint splitter, maybe $20? or so to buy.   Some parts stores (autozone does this, one reason i recommend them, but other stores may also) will rent you some tools for "free" when you buy parts there .. they take a big deposit in case  you bolt ... but give it all back for return of the tool in good condition.  
 It's easy ... if you know how to work on suspension .. if not, get a Haynes manual for your car from part store, amazon or haynes.com for around $20,  the blood and busted knuckles you save due to reading it will be worth the money ;~).