I believe my old SB 128 used the 1370 but I can't be sure, I don't think it was the 1371, but I could be wrong. In the rc.modules in /etc/rc.d it shows this
# ES1370 support, such as Sound Blaster 128PCI:
# ES1371 support, such as Sound Blaster 64V PCI:
so take a pick, uncomment one, and see if it works.