Hello I have the wonderfull bodysuit for V3 from billy-t store. It comes with a body morph for the suit and for V3 itself. Both work perfectly but now I am looking for a way to use other V3 bodys too. (Smaller breasts would be fine sometimes) There are a lot of fine bodys out there but somehow I need to get the morph from the body and into the suit. Since both items use/need the V3 morph pack they could have something in common. It there any way to use morphs like that ?

Yes, that is what the program The Tailor is made for. It is available at Daz3D. Mind you, I've never got it to work properly, but I've seen a lot of good results made with it, so it's probably just me. In any case, Daz has a 30 days full refund policy, so there's nothing lost by trying it :o)