Looking for engine original to my car

[911TurboSlant]

So I thought I’d put the feelers out and see if I can find the original engine to my 1977 Turbo.

I found some info looking through the owner’s manual and found the engine number 6770486 and the car belonged to a Javier Ledesma in Cave Creek, AZ at the time. An entry in the manual was made recording vehicle information and the mileage at 52,089.

The only entry under maintenance is a “complete engine and trans overhaul” at 52,250 miles dated 10/29/92

My VIN is 9307700514

I was told Don Jackson enterprises did the engine work but they have no record of it.

If anyone has any info on the engine please message me here or email at bearden321@gmail.com

Thanks
Brian Bearden
Valparaiso, IN