I have searched the web till I am blue in the face. Spoke to two different international dealerships and got two different answers. What is, and where do I properly measure ride height on my truck. All I did was replace the leveling valve, I didn’t think it would be this big a deal to get a proper spec. I think it has an international suspension under it. I’m not 100 percent sure but the springs travel under the axle....from the pictures I’ve compared to it appears to be the iros suspension.