This is for 2-GM #3782461 461 SBC Small Block Chevrolet Heads Great Condition Date Codes F-1-5  F-1-5 Perfect Matched Set  Both 1965 461s, These Valves are cut for 1.94/ 1.50 Valves. and look like they may just lap in and run ,,,ck with machine shop. And Both have been checked at machine shop ,.. these heads are still Stock are in Good Condition .I Warranty them to be Good or Full Refund for 90 Days after purchace, or Full Refund. Please Ck out my other auctions for more Rare Parts ! Thanks For Looking! No Reserve!...