My two cents....
If you were to TSOP flash a console I would make sure the BIOS used actually supports 2Tb drives.
From top of my head M8plus, X2 5035 & personally I use iND-BIOS 5003.67 as it also supports RAM upgrade.
In regards to adapters I've been using cheap generic Chinese ones and generally replace their capacitors with Nichicon's to be safe.
It's a must that you use Ultra IDE 80 wire cables otherwise you will have data loss!
If you get a cable thats atleast 77cm in length there is a way to fold it so you won't have to swap one of the connectors around.
https://www.xbmc4xbox.org.uk/forum/viewtopic.php?t=5564
Once you've got that sorted out and have installed a dash with an auto installer you will have to reformat F & G partitions
with 64kb cluster size. The safest way to do this is with CHIMP by selecting to format F & G equally.
Trying to do this with XBPartitioner can be a bit temperamental...
From memory if the clock capacitor is removed from a v1.6 console it will no longer work.
But I still recommend replacing them as specs show that their only good for 1000 boots
until there likely to fail and leak acid on the board which can potentially corrode traces.