Ken Pick's stuff, over here?
http://www.freelancetraveller.com/features/shipyard/book2plus.html
It's a sort of a Highguardization of the Book 2 rules. Not bad, though I haven't used them. I like to use Pick's model for Nuclear Missile damage (D6xD6) rather than SS3's, because I don't like that SS3 discards the book 2 damage model for missiles, and it's an elegant thing.
http://www.freelancetraveller.com/features/shipyard/book2plus.html
It's a sort of a Highguardization of the Book 2 rules. Not bad, though I haven't used them. I like to use Pick's model for Nuclear Missile damage (D6xD6) rather than SS3's, because I don't like that SS3 discards the book 2 damage model for missiles, and it's an elegant thing.