Originally Posted by Lurkin
Might check the parts lists and see if there are part number differences between the models.
That's a good idea! I'm having trouble finding those lists, the closest thing I've found so far is this
but they have no data for 2005+ trucks with regards to suspension. Any help locating a list would be appreciated
Originally Posted by dhk
No, they're *changing* the spring (debatable whether or not it is actually an upgrade...) just for the sake of changing the spring. Typically, they are after LIFT. It isn't to compensate for bumper weights.
And keep in mind how the weight differences will be distributed. Not all on the front.
I see what you mean, thanks. I have run into some threads about front suspension sag when adding something like an ARB bumper (like this
). You do have a point in that a bumper places weight ahead of the front axle, whereas body/engine differences places weight in the center where the rear springs can help compensate for the additional weight. So there may very well be no differences (or very small differences) in the springs between models.
Ultimately, what I would like to be able to do (if the springs are in fact significantly different) is add an ARB bumper (no winch) and use a spring from say, an access cab, to maintain stock ride height (I have a regular cab).