I did the diamond G module and clutch springs at the same time and when I tested it out I was picking myself up off of the ground .I couldn't believe the difference either.
At the time that I did mine ,I didn't know about this site and all of it's knowledge.I have 28 inch 589's on mine so I bought the highlifter kit .It came with the black secondary and a red and orange primary.The orange has a higher stall speed so it is good in deep sticky mud but with my truck so high i almost drove it into the back window a couple times so I ended up going with the red.Which springs did you go with??