Ok Kiddos, I’m cleaning house and uncovered this matched set of 1958 Chevrolet 283 cylinder heads and original unmolested staggered Corvette valve covers. I’m posting pix of all the numbers so please do some research and y’all be the judge. I can provide more detailed pix if needed. These were found in an old racer’s estate and have obviously been ported. They are totally complete as found. They will need to be taken apart to freshen up but are useable without tons of work. No known cracks or stripped threads. When found, they were each stamped Left and Right. They also have set screws locking the rocker studs. They also have the Builder’s markings. I like trades and negotiating, so let me know what you got!! thanks, David