The bilsteins RAISE the trk about 3/8" I just put on blisteins (all 4) and wk eibachs, using all new isolators and strut mounts. I ended up only dropping 1/2 - 3/4"
but my truck has 116k so i'm sure the stock isolaters were pretty wore out, using the old ones would have added to the drop, but dont like to do things twice
edit: just reread -misunderstood what you were saying. you might
get 1" w/stock shocks, less w/ bilsteins