Certainly, as long as the slot-1 board is ATX. And the chances of you having a rare AT form factor board are small, besides all the AT form factor boards of that erra had provisions for both AT and ATX power.
<font color=blue>Only a place as big as the internet could be home to a hero as big as Crashman!</font color=blue>
<font color=red>Only a place as big as the internet could be home to an ego as large as Crashman's!</font color=red>