I have bend-pak and about 9`6". I store gto above a cadillac allante with about 1 inch or so above each.
The platform frame on the 4 post lift is about 4 inches and the lower car needs to slide under the frame. Once inside the frame there is an additional 4 inches over the lower car, if it`s roof is not too wide.
The allante is about 49.5 inches high.
I also raised the garage door tracks so the door hugs the ceiling when it goes up over the trunk of the gto.
George