375cc Vs 400 Cc and Switching from Saline to Silicone?

The volume of the native breast tissue, stature the patient, and the type of implant that's placed all have bearing on the final size of the breast after augmentation. It's impossible to comment with this information on your particular situation. With pictures to breast sizers this is something you can work out with your plastic surgeon.

Thank you for your question.  When I switch from saline implants to silicone, I usually try to go with a bigger implant if the patient is happy with the size.  This is because saline implants are firmer and project more (can't be compressed as much).  If you are currently a B/small C and want to go to full C/ D cup, I would recommend going to a high profile silicone implant.  A moderate plus silicone will give you about the same or maybe less projection that you currently have.