Yes, the build record for your car will have the engine number for the engine originally installed in your car. (Not sure when they stopped doing it - would be after 1957, though.) The engine number on your car would be stamped on the left side of the block, at the front. The prefix for a 1938 Chrysler Imperial engine would be C19, and would run from C19-1001 to C19-9172. Bill Vancouver, BC ----- Original Message ----- From: Hugecoop@xxxxxxx To: mailing-list@xxxxxxxxxxxxxxxx Sent: Thursday, April 04, 2002 5:15 PM Subject: Re: IML: [FWDLK] Build sheets,etc. i'm trying to find out if my motor is original in my 38, does the build sheet include the original engine serial number?thanks charlie 38 coupe.