Quoted from GustavoRoxbury:thanks much guys!
Since this thread has been resurrected, there is great retype (by hand!) of the Bally Space Time parts list on IPDB that lists all the parts including the aforementioned 00-90 step up coil. I highly recommend if you have the list for any machine and the time to type it for future easy search ability for others.
I know the guy who did it
http://mirror2.ipdb.org/files/2262/Bally_1972_Space_Time_Reproduction_Parts_List.pdf