There not hard at all .Get the car up on jack stands ,take the front tires off place a jack under the lower control arm ,put tenison on it .Then remove the caliper and hang it out of the way,,Loosen the two strut bolts on the spindel ., remove the 2 strut bolts ,Now under the hood loosen the top strut nutt and remove the strut.Let the jack down slow till the control arm almost straight up and down now pry out the old spring becarefull there might be some tennison on it ,The new ones will go in real easy there shorter.
