One pair of original GM small block Chevy cylinder heads, part # 3927186, and dates are E129, E199. These heads are date correct for 1969 Corvettes, Chevelles, Camaros, Novas and Chevrolets with a high performance 350. These heads have been cleaned and crack checked(magnifluxed), and they are not cracked and are ready for rebuild. These heads come with the valves.These heads are currently 1.94s, but your machine shop could easily machine them to 2.02s. These heads will need some of the exhaust valve seats replaced, which one would do anyways during rebuild to accomodate todays fuel. See my other auctions for other hard to find items. The item "1969 Corvette Nova SS Chevelle Camaro RS Chevy Impala 3927186 double hump heads" is in sale since Monday, September 18, 2017. This item is in the category "eBay Motors\Parts & Accessories\Vintage Car & Truck Parts\Engines & Components\Cylinder Heads & Parts". The seller is "mikes_chevys" and is located in Montour, Iowa. This item can be shipped to United States, Canada, Mexico.