1970 1/2 - 1971 Camaro rear spoiler?

[rick lester]

The larger spoiler was an option, was built to use in the Trans Am series, in 1970. The short spoiler was known to produce lift, something like -200 of downforce, at high speeds on the road courses, Taller 3 piece spoiler produces something like 600? pounds of downforce. I would think both are legal, along with no spoiler since both were options.