durobump 07-22 tundra vs 03-09 4runner

So on durobump site they have 2007-22 tundra application that says for lift height of 0 to 3 inches
2.5diameter x 2.25"
1.19lbs (set)
deflection .4" @ 1600lbs
$157

However the Adventure Motors put together suspension kit uses the 2003-09 4runner which is
2.5diameter x 2.5.
2.3lbs
deflection .75inch @ 1500lbs.
$127

My neophyte brain tells me with any kind of spacer lift (ie like the 2/1 cornfed kit sitting here in a box) that the 4runner p/n may be an equally good if not better option especially as its cheaper to boot?

thoughts?

 

Its also significantly softer because it goes in a lighter truck with significantly lower GVWR. You might blow through the 4Runner bumps. You can see the Tundra one deflects half the distance at slightly more weight.