if your old springs were originals from 88, its likely that they were sagging pretty well. if you have a larger engine then that is definately the case. the eibachs may offer 2-3 drop from the stock height. you may have found that by simply replacing your fronts with stockers, it would have lifted it.
another possibility, if you got your truck used, the previous owner may have already installed some 1-2 inch drop coils in the front.