The best bet for that are Bodyslide's OutfitStudio by Caliente. The sliders is a matter of appointing bones, which probably involves rigging. It's best to ask this directly in the mod section maybe. People tend to read over blogs unfortunately, for some reason.

ok i do like the outfit studio so that seams like the best bet for me.  should i copy the bones over from another busty model like the manga body? also do i have to replace the bbp bones that are allready on my body, or can i just add the two extra bones from tbbp?

Copying over might work, it does quite a few times. Be sure you first add missing bones in NifSkope, unless Outfit Studio can do that too.

Try that:

http://www.loverslab.com/index.php?app=core&module=attach&section=attach&attach_id=93725

Mesh Rigger version 88b. Can exactly copy weights from body to body and much more.

will it work if the vert count is different?