Thanks man, I am still using the super stiff factory 3/4 ton rear springs. However I am thinking about swapping them to 1/2 tons for now to soften the rear up and get more flex from the back. Eventually I will three link it and ditch the leafs all together for the best ride/flex combo.
Superduty B codes are almost a direct bolt in and a definite ride improvement. The front hanger and rear shackle get drilled 1/16" larger. The front bolt moves to the rear, and the springs come with a new front bolt.
Aren't those front springs in which case they won't work on this truck.