(Even then, Windows 98 wouldn't install properly* on a rather large base of Via-chipset-based boards.
I have no problems installing Windows 98 with my old MSI-6330 (KT133A), with V3.1 (and up to V3.6) and MSI-6330 V5.
**Issues installing with MSI supplied CD (obsolete) VIA drivers with BIOS 3 (i.e. causes BSOD). Version # 4.32.