my recomendation, take it to a shop and have it done right. when i do struts at work it gives a labor time for r+r strut assembly then add .3 of an hour if it needs a spring removed. average shop labor rate is 50-75. that comes out to about 20 bux a strut worst case. if you flash cash in front of them they might do it for cheap and pocket the money (thats what i would do