Hi Marcelo, we had competing threads going regarding your '58 Tbird so I just merged them into one. It is not necessary to start a new thread unless the subject is different from this subject. When you want to reply to something in a thread, click on the Post button to reply. You could continue to post questions regarding restoring your Tbird under this thread heading. Or if you had questions regarding the engine, I would post them in the 352CI Engine Forum. Assuming it has a 352 engine in it and it probably does.
If you find your Data Codes (they should be on the Data Plate under the VIN # if your Tbird has the Data Plate in place still) look in the TRL under Decoding Casting Numbers and you will find the explanations for the Data Codes and also a breakdown of what the VIN # means. Just click on the TRL link under my signature. Let us know what you Data Codes are also. They will tell you what the car had in and on it when it left the factory so many years ago.