Type 300 Course Computer 12V

[AzureTe]

Hi Chuck,
Understood,thankyou. I'd like to use what I have,which is the type 300 CC, ST6000, ST8001,ST60 wind,ST50 speed,multi, GPS,NavData and Depth. All are working except for the compatibility issue of the ST8001 (which I mistakenly purchased thinking it was compatible) My questions are: What ACC's are compatible with the ST8001 (which I'll locate on the used market) and can I configure the 300 ACC with the ST6000 and use the ST8001 as a repeater until I find a later compatible CU ?
I'd like to update to a new system,but until finances permit your help with these legacy products is much appreciated.
Regards, Jack