Mark you can pick up lowering block kits at autozone for $26 i belive i put those on that sonoma i had comes with 2 block and all new u bolts and shit pretty decent kit for the price
slidelinks dont like lowering blocks they tend to break them Belltech makes a drop spring, or you can get used leafs from a 98 and up s10 with the ZQ8 package or an extreme they are 2.5 lower then stock
