How much weight gain from adding a Dana and roll cage.

I think with the little bit of added weight, low 10's is easily doable. I've already been there (10.28 best) with a 408 4" stroked small block. The 416 that is almost complete went 9.40's in a 2800 lb car and my car was 2500 lb with the cast iron headed 408.
Just curious, how much glass parts you have to get that light ?
I wouldn't mind getting my car down to 2800