@miguelmgl,
The OP has a shackle reversal in front, this provides an additional 1.5" of lift. And he has a longer shackle in the rear. That's why his lifted 60 looks higher than yours.
You say you want to make yours stiffer and more comfortable...usually these two aspects work at cross purposes. Does your truck sway too much and that's what's making it uncomfortable?
The OP has a shackle reversal in front, this provides an additional 1.5" of lift. And he has a longer shackle in the rear. That's why his lifted 60 looks higher than yours.
You say you want to make yours stiffer and more comfortable...usually these two aspects work at cross purposes. Does your truck sway too much and that's what's making it uncomfortable?