Pro sport coilovers

I have them on my prelude and skyline and they haven’t rusted …yet … I had billsteins on one car and they were very good … I’ll keep looking , the only reason I want them is I do go on the track ow and again and it’s hopeless with standard shocks but I don’t go on enough to warrant paying a fortune … That’s why I asked about these but I sort of knew what the answer would be … Lol