I have a 05 lm7 that came without a computer so I bought one online. When I go to tune details it says hardware is P59 gm gen3 4.3 v6 but by vin its a 04 tahoe 5.3 8th vin in it is Z making it flex fuel 5.3 I believe. Do I need to just change all the injector data to match a lm7 or do I need to find a lm7 file and do a write entire maybe segment swapper or what would be best opition wasent planning on having to change any data just to get started start? I also have not licensed the pcm yet.