does anyone know the weight difference between the D and B series motors?

i'm lookin up curb weights on a car site and to know the precise weight difference i need to know the difference between the two engines.

 

The weight difference of the engines is small, not even enough to make a real difference. The real weight difference comes from the B-series transmissions. They're significantly larger and beefier. So, they'll take significantly more power than a D-series tranny, but you'll feel it in the nose.