I never researched DirtKurt's setup here. When I bought them, I knew they were originally bought for a frontier. They've worked flawlessly for me. I did have them serviced about a year ago. There is no leaks. The seals, bushings and pistons are in great shape.
I'm happy to answer anyone's specific questions. Yesterday, I called and spoke with Nicholas at King regarding someone's specific questions. I'm happy to help however I can