i was wondering if there is a website where they show all the firebird engines and all they came with?? like all the internals and the codes and heads and everything else only firebird though!! GTO ENGINE CODES ARE DIFFERENT FROM FRIEBIRD ONES RIGHT?? how can i identify firebird heads from the rest?? do they have a date code to identify a specific year (cause i know that they are #16 heads that came out various years) how do i know which ones are which how can i know what cc they are???? what is the difference between open chamber and closed chamber??