I was told i bought sport lines... just looked at the box and it says pro kit.... but the springs are red... maybe the previous owner bought a pro kit to replace his sport lines???
I have the pro kit and my springs are black I beleive, if not a really dark grey. Do they only make the springs in one color? I don't know if that helps you any.
On the Eibach website they have them both pictured. The Pro Kit pic has black springs. The Sportline kit has red springs. They MAY not have correct pics, though.
im dumb they said sport line on them.... LOL but anyway i went to lower it yesterday... and couldnt get the caliper off i didnt have a torques set with a female part,,,
But for future searchers ..... I recall mine being tight in there, too. I used a regular open end wrench with another one looped onto it for some leverage. Came out easy that way.