I had the car weighed today for fun (it was free and the opportunity was there so I jumped on it).
So, with a half tank of gas, 20lb wheels (not sure what stock wheels are), 30lb battery (instead of 60ish), probably 20lbs saved from the BBK, with a full spare and about 20lbs of junk in the car, the total was a whopping:
3940 lbs!
Within reason and expectations I guess.
Also installed Carbotech Bobcats. Will report on those later (in a week or two).