Fit an aftermarket set, don't replace just 1 spring as different springs have different rates due to age and use meaning hitting a bump could cause the car to do elsewhere than where you were expecting it to. Last thing anybody needs is an accident and the investigation showing one different or newer spring to give the insurance companies an out from paying.
Just about guarantee if ones broken, the other one will too. There's threads on the forum about this and what's available
Just about guarantee if ones broken, the other one will too. There's threads on the forum about this and what's available