ASAIK, new shocks wont/shouldnt !.. cause any CV joint/boot issues..
..as the angle of the half shafts will remain basically the same.

Unless anyone else has a different take on this...??

The beauty of the Rancho 9000's is the ability to adjust them to suit
the 'firmness' of ride to just what you like.
So this would probably solve your 'softer' ride desire.

I doubt the OEM coils are shot...
...unless you have huge mileage carry heavy loads.

Remember..its a truck..on a truck chassis ... so it will feel different to a car.

jo