Yes, that is correct. Th block is a 3970010 casting number, cast date is May 25th. The heads are casting number 3921786, correct for the DZ 1969 motor and are casting date May26th, so the heads sound right for the engine build. also while the engine was rebuilt and balanced the internals are all correct parts and specs as well. I have all specs on the report for the engine work. I figured the trans and rear axle are not original, but the motor?

? seams like it is. car has original smog equipment, seven blade fan with clutch, deep gruve pulleys, intake is winters 3932472. The car recieved a very high end and very correct restoration a few years ago. The car is an X33 car with endura front bumper and cowl hood, bllack top, black stripes, rosewood wheel. The original owner verified that he ordered the car this way as well. I am just trying to get to know everything about the car and there seems to be alot a views and variations of chevy builds. If the motor was built after the cars build or 5 to 6 months prior to the car build it would then be a be a no brainer!!!!!!!!!!!