550hp in a Gen 3 Hemi

I'm considering a gen3 swap but as I think about all the changes required, I'm wondering about hitting my HP goal of 550hp. I know about what it will take to get a LA stroker there, but what about a 5.7 or 6.4 Hemi? If you are going to mod one or the other, which one will be less expensive to hit the mark. The 6.4 doesn't have far to go, but it is a bit more expensive to start with. It will have a 6speed manual behind it and fuel injection, which hits the budget pretty hard too.

My Cuda / Gen3 build project has evolved from the original Mopar Performance 5.7 to a nice 6.1; then to sending the 6.1 back to BES Racing for a complete, blueprinted stroker build with ported heads; custom cam; ported intake manifold and beyond. Then the Hellcat crate engines came on the scene and I couldn't resist. I will make you a great deal on my 6.1 based, 393 stroker engine that will easily meet your performance goal. It was a brand new 6.1 that I sent to BES for the full treatment. This is a REALLY NICE engine; far nicer than any stock 392 that is out there. Please PM me if you are interested. I can text you some pics, the blueprint specs and discuss $$$