hey you guys, New here, so please forgive stupid questions and ignorance, a couple months ago i bought an efi live v2....and i bought tunes from ppei and the v2 has honestly sat on the shelf for over 6 months...well now that i finally have some time off from work i want to learn all i can....during my time off me and a friend of mine have decided, we want to try some of the tunes i had found on diesel place......now for the questions...both trucks are lb7's the tunes i have found all state no stock trans or stock trans safe...i am assuming this is referring to the allison, my buddy has a zf6 (6 speed) duramax....how will that affect the compatibility of the tunes with his truck....second, i did learn how to install the tunes when i first got the v2 and how to buy licences, but i have already forgotten nearly all of what little i knew about the v2 out side of using it for diagnostic, so may someone please help refresh my memory....will i have to extract the tunes i had already purchased from ppei before i go on installing the others? will i have to save the stock file for the zf6 duramax? i know these are a lot of questions but please someone knowledgeable please help....much thanks