I think it COULD be that simple, but my experience was different. I had to use a F**d front axle because of my t-case choice - had to do with driver's side output shaft. The axle I chose had the spring perch cast right into the pumpkin. That meant I pretty much had to use the springs that fit the axle - and they sit parallel to the frame.
Of course the AD frame is not parallel - so I had to fab up some mounts for the spring etc. etc. etc!
I think if I had to do it over again I would either choose a different t-case/axle combination OR put the body onto a newer 4x4 chassis.
Just my two cents!
Craig