Hi all --new member--thanks. My question is I have a 1970 challenger. The id boss by the distributor say E383 -- 3 27---hp. I understand that this is a 69 engine. Here is what is confusing me--on the id boss it has the proper serial number to match build sheet, but looks as though it has been restamped---and my buddies agree with that. But the id pad down by the starter should have a serail number also---but the only mark on that pad is the letter A. No other letters or numbers---Do I have a replacement block. Also build date of car was 10 1969. Thanks for any info or help.