This may sound stupid, but those may or may not be the ones I have. The previous owner told me he put Intrax springs on the car, but those are purple-ish and the ones on there are yellow like these. The springs you posted are the only yellow springs I can seem to find on the market. So, if in fact they are the stangsuspension.com ones, I am quite pleased with them. They are not too stiff for daily driving (and the roads here are EXTREMELY bumpy) and I'm very happy with the drop they provided. No complaints here, specially for that price.