reflashing the e67

[nycblazer]

how can i reflash the e67. i bought the ecm from ebay and read the ecm tune.
it said
2.4L DOHC
4T45E
cal. 12610012
serv. no 12605843

now i want to reflash it to a 2007 cadilac cts-v 6.0L with a t56 tranny is it possible to do this.

gonna use the tune from a 2007 cadilac cts-v on a 2007 6.2L escalade engine with a t56 would this also work.
i also have to licence available if that helps thanks guys

i know the service number is the same as the cts-v