Hi, Galactic scooby. Romwarnut here, and I'm new in town. I believe that the PDFs you're looking for are at Vintage Starships II-- I remember this, 'cuz I helped Steven Bacon with specs for the Earth
Cavalry-class 'Light Destroyer/ Destroyer Escort' from FASA's
The Romulan War supplement

(about 3 years ago). I'm still kicking around some 'potential upgrade specs' for his Earth
Marshall-class Destroyer, both for Romulan War service upgrades/ variants and for early Starfleet service. Anyway, here are the URLs:
*
http://homepage.ntlworld.com/steven.bacon/PDF/ROMULAN_WAR.pdf
(this is the Earth 'UESN/UESPA Construction Tables, 2130-2160');
*
http://homepage.ntlworld.com/steven.bacon/PDF/PREFED04.pdf
(this is the early 'Federation Construction Tables, 2160-2230');
*
http://homepage.ntlworld.com/steven.bacon/PDF/Romulanv1.pdf
(this is the early 'Romulan Construction Tables, 2130-2230').
I hope the information helps. I personally like Vintage Starships II since Steve includes material from
The Romulan War supplement
and the Starfleet Museum's 'Romulan War wing'. I even think he did at least the
Enterprise NX-01, if nothing else from the
ST:Enterprise series (I'd have to look again). As for the FASA TNG Construction stuff, I don't honestly remember seeing any of it myself on the Net, but since I was more intent on pre-TOS stuff I likely missed it. In the meantime, good luck and enjoy.
--Dave ("Romwarnut")