Anybody have a stock tune file for an '07 Silverado classic 2500HD 6.0/4L80E? . Looked on Holden Crazy but no luck for a 6.0/248 tune.

My dad's thinking of buying a truck and I have reason to suspect the tune may have been worked on previously. If I can get a stock tune for comparison ahead of time I plan have a look before he commits to the buy to be sure we know what's up.

OS is: 12613248
Cal is:12587672

Thanks to any and all in advance.