ISO 7i97

Does anyone know a source to get a mesa 7i97 analog servo board. I have been waiting patiently since there is supposed to be a new version released but I am now needing my machine to be running instead of just wanting so I am looking to purchase one sooner rather than later.

i'm also looking for a 7i97 and i can offer a 7i76E something like an exange
me planes change i will keep the dc motor from the late instead of replace them to modern 3f servo motor

for  me lathe i need  48 Di and 24 Do 
when i use  a 7i76e whitch i have and i add 
the 7i85s encoder input for  X and Z axes and 2 encoder inputs for the 2 tool turntable       4 encoder inputs i need all of them 
the  7i83  analog out  for the 4 drivers  X , Z , T1 and T2                                                        6 analoog out      i need  4 of them 
the  7i84  for aditional Di and  Do   
the 7i76e had 32 Di  and  16 Do   same as 7i84  make a total  of 64 Di and  32 Do               i need  48 of 64 Di and 24 of 32 Do 
can i conect this  3 cards (7i85s ,7i83 and 7i84 ) to the 7i76e and wil linux cnc 2.8.4   all in and outputs recognice  automaticly  
do i have to order some special cable  to let it work  ?
this 3 cards are in stock at eusurplus  for 337€

eusurplus sugested me to use a 7i80hdt in combination with a 7i48 to control a 6axis analog system  this board are available  
can linux cnc handle these combination right out of the box  ?  a need for  firmwear update ?
on the 7i80 are 72 I/O available  devided on the 3 pinheaders  1 header will be used for the connection to the  7i48 
are the  72 I/O stil available on the  2 leftover  or only 48 ? 
do i need for  the I/O an addition cart 7i84 who had  32 I and 16 O can it be connet as one  ?