I got a new reman motor from pepboys. the head has the older head on it but the block doesn't have any casting numbers on the side of the block like my 70 does..the only numbers on the block is 330 4 thats it..none on the vin pad either..any info would be helpful..the motor was a long block with a 2yr unlimited mile warranty..it runs strong and purrs like a kitten...any info???? thanks adam