69 gts 383 block

Hello everyone,
I'm a B body fan and owner, but have obtained a 1969 383 gts block and was hoping some of you knowledgeable A body people could help me out. I have an interested buyer, but not sure of the value. The engine is all apart but all major components are with it. (In boxes) Any help or information would be appreciated. vin is LS23H thank you