These coilovers were super easy to install on my evo 8 and i've got mine with swift springs 7k front and 9k rear. they ride better than stock! yet keep me glued to the ground. ive had them intalled for about 5 days so far and theyre settling nicely. only downside is taking 5 weeks to get them, but so far well worth it. i chose these over feal 441+'s and do not regret it one bit.