I'm looking to put new 6.5 coils in my dd I'm thinking about getting a long arm conversion to. I'm looking for springs that run smooth and cushy. Or is a lot of it in the shock? Or long arm?

 

it has more to do with arm angle at that height. if its still on short arms they are so steep they drive into the subframe before the spring has a chance to do its job. I do hear good things about rubicon express, but I think its more arm angle and shocks. (so yes mine rides like crap lol)