I think most of us know just enough to be dangerous so you are in good company. If you do decide to dig into that Charger either for it or the Barracuda then a head upgrade during the build would be a good thing. Dadogedkid has a set of Eagle heads for sale on here that would be a good upgrade. https://www.forabodiesonly.com/mopar/threads/eagle-hemi-5-7-parts.433629/#post-1972522074
