This is not the Kore suspension but, last Oct. , I installed the Lorenz/Bilstein Suspension System on my '03, 3500, 4X4. It raised the truck about 2". The ride is better. I have not hit the front bumpstops, yet. And I've tried.
I don't beat the crap out of the truck, at all. But, I noticed that "Speed Bumps" caused me to slow down to about 10 mph. to avoid hitting the bumpstops. I've built up to 25 mph. & have never hit the bumpstops with the new suspension. The front end is much more "absorbant" of roughness in the road.
I'm happy with my system & would do it again & recommend it. I wouldn't be surprised if the other systems are at least as good as the Lorenz.
Joe F. (Buffalo)