the K springs are about 1/4 in shorter. you can get the ride height where ya want but it pulls the adjusting collars down a bit. I prefer to have them closer to the top....not sure why just picky I guess. I have not seen any durango springs around here....

I will say that I have 2 stock green springs that dont hit.....but I had to sort through a few sets to get them.Seems odd to me that this is an issue. Ive built lots of different shocks and these are the only brand to have these issues. bummer! Maybe it doesnt matter for performance on the track but it bothers me to hear it when adjusting on the bench.