my transmission is going bad though thats what i need to swap out. my dad said just do the engine too so i wanna do the gtp engine. im guessing if i did a gt transmission with a gtp engine i would have to reprogram the computer system and i dont really want to go through that. so a gtp engine will work in a gt?...am i looking to get anything from 04-08 for years (will 07 and 08 work too)? what is the easiest thing to do in this situation that you recommend?