I am gathering an reserching for a shoping list for lowering my xtreme blazer an seeing if anybody can help me out. an what modification have to be made ....ground forces has a 3' inch drop for both sides but what about drop spindles an shocks ?can i drop 3 inches without the spindle an cant find the best shocks for the applications....any help would be great.

 

Xtreme's are about 1 1/2 inches lower than regular Blazer's.
A 3" drop spring would only drop it another 1 1/2".
Belltech is the only manufacturer with a drop spindle for the 98+ Blazer and they are pricey, Right at $400 for the 3" drop spindle.

The reason they are so expensive is, in 98 the Blazer received a makeover on the suspension. Unit bearings, spindles 2 piston calipers, and longer leaves were changed.
You can however switch over to the older style bearings and spindles, just find an S10 and pull all the parts from it and you can convert yours.
Then all you can use any drop kit for an S10.