I took my care to get a complete mds delete due to cam wear. I was getting my heads looked at and my guy says they are from a 5.7. Is this possible and does this affect the performance on my 2012 Chrysler 300 srt8. ?

Hey guys...just wanted to reach out to everyone for some specific feedback. I've installed Corsa catbacks, JBL shorty headers, a cold air intake and had the car dyno tuned with my Diablo Predator. It seems to be running nicely, but I am looking for a little more "ooomf". On other threads, a...