Ronnie,
The springs come with the adjusters on them. There are some bushings on the bolts at the end of the spring. You would need to look at the condition of yours to see if you wanted to replace them at the same time. They are not a required change item. The springs we have drop shipped direct from GM to save you $$ on the shipping. The springs due to their size and shape can't be conveyored and must be hand carried so ups and fedx charge a surcharge on them. GM gets a major discount and passes it along which we do as well. I can't tell you exactly what the shipping is untill GM bills me for them but should be in the 25-28 range per spring as an educated guess.
If you have any other questions or wish to order give us a call at 800-234-5284 or email me at
parts@fichtnerchevrolet.com
Bob