A while ago I saw a module for the Blizzard on the Internet.I recently
purchased a card,too.This is the AIBB module for the M-Tec 1230/28 RTC-42MHz
so you can compare systems before you buy.
It costs almost the same as the Blizard but it also includes a FPU.

 PERMSSN    UID  GID    PACKED    SIZE  RATIO     CRC       STAMP          NAME
---------- ----------- ------- ------- ------ ---------- ------------ -------------
[generic]                  645    1760  36.6% -lh5- 0e95 Nov 15  1995 m-tec030
[generic]                  254     406  62.6% -lh5- 97ce Nov 20  1995 M-Tec030.REA
---------- ----------- ------- ------- ------ ---------- ------------ -------------
 Total         2 files     899    2166  41.5%            Nov 24  1995