ive sold numerous sets of arms. Sad thing is the resellers are not including camber locks and trucks wont align.
Ive been doing these kits since late 99 ive never had one truck not align that ive done or sold kits to.
on the 07 ups 4 inch a arms and spinldes for 6 no issues
if you want 5 3 inch a arms and spindles no issues
Heres one of the 5/8 trucks I did aligned fine and used the djm set up
I hear both good and bad and i install and sell spindles/springs also. Honestly I like both one thing though most customers hate losing turning radius of spindles.