A matched pair of GM #3774692 283 engine heads as used for all Corvette models in 1960 and non-FI engines in 1961 production. Dated I99 (Sept 9,1959) and I109 (Sept 10, 1959. In very good recently rebuilt condition coming from a running engine which received new aftermarket heads. Sales tax may be charged by eBay if applicable. Can meet for delivery within Florida or arrange shipping at actual cost (0 is an estimate). Ask any questions before bidding. Thanks