Page 175 of the Spacedock Sourcebook has a section (4 pages) on how you can convert ships back into the basic system.
I don't agree with every thing there but it works well. On some systems, however, it just a good guess as to how to represent them in the basic rules.
If there's any other help you need just ask.
Phoenix...
"I'm not saying there should be capital punishment for stupidity,
but maybe we should just remove all the safety lables and let nature take it's course"
"A Place For Everything & Nothing In It's Place"