How do you change rear brake pads on an mr2?

Hi, just did mine, the pistons have to be wound back, if your in the UK you can get the tool from Halfords, about £20, i live in Spain & had to use mole grips with something on the grips so as not to damage the piston, make sure the lug on the back of the pads sit in the recess of the piston...........good luck