If the 1998 has curved windshield ,and I believe it does ,then it should be a direct fit if the frames for both bikinis are the same height.
I have 2000 Adventure and when I replaced the windows I learned that the factory setup is higher than the setup I had, thus new factory
windows that I purchased did not fit to my Bimini and I had to purchase a new top and frame as well.Greatlakes boat tops carry many
oem canvas tops and framing.Charlie
