Nightmares and Basilisks are both being changed to require Tech 2 or better cap transfers. How this is defined is slightly different based on the ship.
Nightmares can use Tech 2 Cap transfer and Faction Cap transfers.
Basilisks can use Tech 2 Cap transfers, Faction Cap transfers, and Storyline Cap transfers.
New Basilisk required cap delta is -70.2 for level 5 and -140.4 for level 4.
There is a two week grace period before this becomes the requirement.
This change will go into effect downtime April 5th, 2020 UTC.