67ss 396 Engine numbers

Need help with numbers .Hi i would like to build a correct motor for my 67ss 396 chevelle. I think the build date was in march 67. What is the lag time on engine dates before car is built.Can you tell from the cars numbers if it had 325 ,350 ,375 hp motor. I would like to get this car back close to correct. Heres the numbers top to bottom. O3E ST 67-13817 BF04624 TR 731 FF 39003 010266 . I think it was built in freemont "Z". It has 66 heads 3872702 A56 .Thanhs in advance!