Feel's like they are blown, I have the 350z d-spec on my 04' coupe; my question is that do I need to replace them with the D-spec or can I go with tokico blue for 350z... 1/2 the price....

 

what do you mean they feel like they are blown? When you adjust them, is there a difference in feel?

 

I feel a lean on one side, feels way to soft..

 

Pull the suspected blown shock from the car. Compress it by hand. If there is no resistance and you see oil leakage on the outside of the shock casing then it is blown. If you replace your shocks you need to replace all 4. Mixing and matching D-specs with the Blues is not a good idea.

 

Measure shocks on application spec shock dyno. Because shocks can weaken without external leaks.
http://www.shockdyno.com/