Also, you may want to get shocks too before you try adding anything extra. Yours look like they have lead a long life. How are your brake lines? That rear one looks awfully crusty. Not trying to be a jerk. I'm just promoting safety and general maintenance before you "get the thing sideways and out of control".

 

Can they be mounted in front of the axle too?

Looks like a leaky Chrysler 7.25 - What axles did they come with is the 7.25 the least favorable?

Shocks and shackles will be replaced this spring for sure the truck is boaty. Those brake lines I will probably redo as well because a few years ago they let go and the truck hit a telephone pole (not me) then my grandfather repaired the brake lines probably half assed.