Each one replace a variant of the Kestrel.
Sukhoi T-50
The Sukhoi T-50 is a russian multitask jet-fighter designed to takedown alien spaceships. (Replace Kestrel-A)

viewtopic.php?f=11&t=30227
WA/T-63 Paratrooper Jet
The WA/T-63 Paratrooper Jet was designed to capture by force enemy cargo ships, but can be effective against armed ones too! (Replace Kestrel-B)

viewtopic.php?f=11&t=30229
Mikoyan MIG-31 FoxHound
The Mikoyan MIG-31 FoxHound is a jet interceptor equiped with a powerful radar. (Replace Kestrel-C)

viewtopic.php?f=11&t=30231
Download:
https://www.dropbox.com/s/76hwpbmqmbg2m ... s.ftl?dl=0
Thanks to SentryJumper for the suggestion.

V1: Release