Will I need a lift? Don’t want the scars that come with it , suggested I could do 375cc over the muscle. (photos)

what's most important it that you have substantial asymmetry that will likely be worsened by augmentation alone. The 'good' breast will get a nice lift, the 'bad' breast will get waterfall deformity and worsen the symmetry even more. As for placing implants over the muscle, well that's just bad medicine. There is a mountain of evidence that over the muscle increases your risk for capsular contracture, implant palpability, and wrinkling. Stop worrying about the scars; done by an expert and they will become invisible to you quickly. Most importantly, a lift will create a breast that is beautiful in shape and symmetrical.

Dear Awesome126716,
determining whether you need simply a breast augmentation versus a breast lift can be somewhat complicated. It depends on a number of factors including skin laxity and current nipple position. Generally speaking, if the nipples are lower than the inframammary line the patient will most likely need a breast lift. If the nipples are at or above the inframammary line we can generally get by with just a breast augmentation depending on the size of the implant the patient wants. I often still using implant when I perform a breast lift because it provides more upper breast fullness after the lift. To be sure a consultation with a board-certified plastic surgeon will help determine what the patient actually needs.
Daniel Barrett, MDCertified, American Board of Plastic SurgeryMember, American Society of Plastic SurgeryMember, American Society of Aesthetic Plastic Surgery

Your best look would be with a lift, especially if you want to be even. However, you can choose just to have implants. they will be larger and still sagging.