Just finished constructing a new garage. Twelve feet high inside and deep enough for two cars. So actually room for four cars. I had 6 inches of reinforced concrete poured to support the stress of a lift. I just don't know if I want a four post or a two post. Anybody with some suggestions based on personal experience? I have an 84 spider and a 90 Miata that I will want to raise for work. Thanks in advance.