Yes,
I found the LT1 8051 ecm on a Buick Roadmaster a while back. When I first tested the replacement theory I though the ecm was junk, couldn't talk to it very well in the vette. Searched every where for a solution on why it wasn't talking and in a far away forum, deep into an old thread, was a suggestion that the 8051 gets confused from LT1 to other LT1 models. They said to pull the CCM fuses till it talks. I pulled CCM2 and it came to life. Programmed right up.

I appreciate all the help. Even though the opti has bit me many a time, I still love my vette LT1.