when talking about this subject 2 term's alway's come up nowaday's
#1 NUMBER'S MATCHING
#2 ORIGINAL (BORN WITH)
these two term's are burned into the public's mind just like a 1969 camaro COWL HOOD , we all know that a 1969 camaro hood was named ZL2 COLD AIR HOOD by GM but the public RENAMED IT ! , COWL INDUCTION was for a chevelle, that's the best way I know to describe this , trying to tell someone that a correct date coded engine that fit's a car's build is not number's matching IS FUTILE ! YOU ARE WASTING YOUR TIME ,
anyway term #1 NUMBER'S MATCHING to the public mean's a car has an engine and or transmission that is the correct number code and date for the car which is what you will have if you find a block that fit's your car's build date and is correct for your car , AND THIS DOE'S ADD VALUE TO A CAR !
term #2 ORIGINAL (BORN WITH) to the public mean's that the car has the original motor and or transmission that it left the factory with ,
I read your first post and the thing that would make up my mind whether or not to do this or not would be the way that you know a 1968 camaro is an RS/SS ? the car's were not coded the only thing that the vin and cowl tag tell's you is what color it was and whether it was a six cyliner or V8 , if you have the protect-o-plate for the car and the fact that it is an RS/SS is solid then YES I would definately find a number's matching engine for it ,
if you do not have the protect-o-plate or some other way (NOT SURE WHAT THAT WOULD BE) to prove it is an RS/SS I would NOT worry about finding a block to match the car's date because it won't matter ,