Added Texas, Oklahoma, BYU, and Colorado St to get to 16.
Two 8-team divisions. Possible Alignment:
South: UCLA, USC, Arizona, ASU, Utah, BYU, Texas, Oklahoma
North: Cal, Stanford, Oregon, Oregon St, Washington, Washington St, Colorado St.
Or you could do it East/West:
East: Texas, Oklahoma, Colorado, Colorado St, Utah, BYU, Arizona, ASU
West: UCLA, USC, Cal, Stanford, Oregon, Oregon St, Washington, Washington St.
I'd be very happy with either of those scenarios.