Rears are very simple to change mate... Basically jack up and secure car. Take wheel off Undo bottom bolt on shock Pull spring out... Put new spring in and do everything in reverse 15 minutes a side dude Get some springs, come to the Milton Keynes meet the last Sunday of the month and I'll do it there for you. In fact, I have 2 second hand springs you can have £30 for the M sport ones that are 30mm lower or £25 for normal ones. Ill fit for free at the meet?