66 satelitte 383 engine number

Trying to find out what this number is on a 383 engine in a 66 Satelitte. The only number on the pad below the distributor is A29577A no other marking either. I dont think it is the original engine because it has some orange paint too. I can't get under the car because of health issues. This the best picture I could get. Thanks

A pic of the side ( casting numbers) might be a little easier to get.....or maybe just back up and get some overall pix. Sometimes just components such as carb, coil, ect can have date codes that peeps can decipher. Might help, just maybe.

Nice car BTW....mine used to look just like it, with Green/Citron bicolor interior. Original AC car?

Factory ac cars, citron gold interior.
I can't get under the car right now because of health reasons.