Ya, I remember seein on here someone trying it... The frame part is squared off on the pre98s, and is like rounded or notched or something to allow the 98+ headlights to fit... So if ya got a torch/welder you might be able to notch just enough so the headlights fit w/o damaging the structural integrity...
Or you can probly just get a 98+ front clip and put that on... maybe an engine and/or transmission upgrade that way too...