lady80 ~ hmmmmm...as I look thru my April issue of Corvette Fever...I see where Thompson Astro Tops does make T-Tops for the 68-82's...Thought they only made the Astro I for the C3's. OOOOOps !!
Says $479 per set with rebuildable exchange...but it says acrylic lens.
We have one of the astro tops on our 81. It is ok but I would not recommend it for a long trip. In heavy rains it does leak. Your t-tops are much better. Also, this astro top is harder to put in and out then the regular t-tops.