1957 Chevrolet 283 Block with Chromed and polished Fuel Injection unit. Block was traded to me and I was told it had been rebuilt ( I have not confirmed - no guarantee). The heads are very rare FI heads (casting number 3731539). I have owned the injection unit for 20 plus years, was completely rebulit and has never been installed since. The injection unit has been chromed and polished, great for hotrod application. Call me "Dan" for more details (503) 880-3155.