Heres one of a couple of threads that dealt with that question.
Curious about your cars weight
Is the EM a longer wheel base car than the standard 90"? Even a couple of inches in extra length generally adds several hundred pounds in over all wieght.
FFR seems to be about the lightest replica around, low 2000's. "Thin" fiberglass makes the biggest difference. Unlined trunk, hood, inside fenders, etc. also have an impact.
The longer wheel base cars (Excalibur, Classic Roadster, Stallion, etc.) will be in the 2700-2800 range. As the car becomes "nicer" with paneling, fender skirts, trunk and hood liners, more heat shielding, etc. this all adds weight. The "glass" on the Classic Roadsters is a little thicker than most, a robust build! But you "pay " for it in more ways than one.
351 generally adds 100 pounds over a 302.
Pretty amazing considering the original FIA cars were darn close to 2000 if not 1900 pounds when race ready!
Ernie