Originally Posted by brandonjansen
A coilover impacts your steering geometry in every meaningful way....
The only angle our coil overs can affect is the camber, and I made an assumption that he was replacing whatever is on his truck with a direct replacement. There may be some slight difference, but on a truck with 38K KMS, spring sag really doesn't become and issue.
Now, with a strut, everything changes. The strut is an integral part of the steering geometry.
Ask yourself this; would you get an alignment after changing the front shocks on a non-coil over vehicle? Springs hold the vehicle up, shocks control the springs bounce.