I have a customer that just swapped a 4l80 in his 2000 Camaro. the car was previously tuned and I don't have the stock file. I found a 4l80 Camaro tune in the repository. Can I start with a stock 2000 Camaro tune, do a segment swap for the trans and trans diag from the tune out of the repository with the 4l80, then write entire over my customers ecm? Is there a better way to convert this current tune to a 4l80? is there something else I can use for a segment swap? I apologize if this has been gone over. I couldn't find a clear answer with a search.

Thanks in advance