The system in Cyberpunk is now known as the Interlock system since it's used in a few other games.
Fuzion is bits of Interlock mixed with bits of Hero / Champions and stirred together. YMMV heavily on the end result 'tho the latest pdf version I've seen looks better than what I have in my Armored Tropper Votoms book. It's also free. Fuzion supports plug-ins and the likes for rules so it shouldn't be too bad to make a "Traveller" plug-in or adapt one/several high-tech plug-ins out there.
http://www.thefuze.com/ is a good starting point
A similar free system derived from Fuzion is Action! .
http://www.action-system.com/
As for staying with Interlock itself, I would recommend you take a look at Mekton Z (or Zeta), Mekton Z's advanced construction book, and Cyberpunk's Maximum Metal and space books. That should give you a good start on ships and higher tech items.
Mekton uses basically the same system as CP and the Mekton Z construction book and I think Maximum Metal have conversion rules between the two games.
Casey