4L80 Swapped GTO.... Can I write entire an Express Van File?

[village_idiot]

I have a car here (04 GTO with a 6.0 and 4L80E) with OS# 12587604 and I cannot find a file with an 80E and that corresponding OS# to perform a segment swap. I have a known good 6.0/4L80 file out of an 04 Express Van OS# 12587603... Will everything work correctly if I just VATS delete, and Write Entire the Express File into the GTO PCM and start from there?

[2xLS1]

Try this. Then tune the 5.7 engine cal for a 6.0.