i want to be a full size c with silicone breast implant what size cc to use? i had 400cc saline and i have to have them replaced i was a 34d. i am having a lift and replacing the saline with silicone. i want to go from the 34d to a full 34c. the silicone will be under the muscle.will 300cc make me a 34 full c. before my first breast implant i was a 34b and the 400cc saline made me a 34 d.