If you want a Blazer, they changed body styles in '73. For several years, they had a 1 piece full roof then went to a half roof. Avoid the 1 piece. I had one. They have some rubber blocks that fit between the doors and roof to seal them up. They're very fragile and VERY expensive, if you can get them at all. Even back in the 80's, they cost well over $100/side. They'd likely be $500 or more now if they still make them.
