What happens if... (off road suspension on sport)

I have an 08 sport. What happens if I put the off road springs and 4 leaf rear with 5100s on my truck? I think I'd gain progressive suspension up front, and better strength in the rear. Would my angles or height change at all?

 

I changed to sport springs in the front of my off-road and bumped the 5100's up to .85. There isn't any noticeable difference switching between the two, unless your current springs are shot like mine were. You do realize a progressive spring will produce a "firmer" ride compared to the linear found on the sport models? How much preload are you going to place on them? .85, 1.75, 2.5 on the shocks?

 

Rear springs are the same on the trucks. Other than the TSB springs will have a little lift with them for now. If you're going to lift and actually want a better payload capacity without looking like a squatted bug then aftermarket springs are the better choice in the rear.