Supposedly around 1200 lbs. dry. Today I got the drivetrain--a 10,000 mile S2000 engine and gearbox. The bellhousing is a bit too large so we have a bit of cutting and welding to do, but it should fit just fine once we open things up a bit.
I plugged the numbers into Cartest and the results look promising. We'll see if reality lives up to expectations.