the nova i have has a 350/th350 in it already. according to the link posted, the curb weight should be just under 3700 lbs. for the nova.
i have a TF truck, and i don't see how it could be that much heavier than a 1/2-ton, especially if i am losing some heavyweight stuff like the front and rear axles. i don't plan to try and keep the 1-ton payload