Is there some site where i could find the mass estimates for all system components, as well as injection trajectory/delta-V budgets? All GLXP entrants i heard

Is there some site where i could find the mass estimates for all system components, as well as injection trajectory/delta-V budgets? All GLXP entrants i heard of seem to have planned to make do with exceptionally low LEO insertion mass. Which sometimes made me think of them as vaporware.