I have a 2006 Chrysler 300 srt8 . I blew my engine and I’m thinking about putting a 6.4 into it . I know most would say to just rebuild the 6.1, but I got the 6.4 for free since my brother owns a junk yard. Can I use the same trans from my 6.1 ? I know I have to tune it with someone, but anything else that I am missing ?