Suspension Question

[Blazn C5]

I have a 70 4x4 blazer with I think a 6 inch lift and 36 inch tires that was installed sometime before I bought it. I have had lowered 67-72 trucks and muscle cars but this is my first 4x4. The ride seems ok but the steering seems to be kinda all over the place. It still has the stock pitman arm and steering arm .My question is should there be either a raised steering arm, drop pitman arm or both ? The draglink that connects these together looks to be at a pretty extreme angle. It also has a single steering stabilizer and think with the tire size it should be a double stabilizer ? I am also wondering if the power steering box could be part of the problem ?

Anthony