6.4l budget build….kind of

I used a Cam Motion Titan 2 cam in my 5.7 and I'm very happy with it. They have a Titan 2 for the VVT engines also, although the specs are different. Since you are using a stand alone ECU, you can use almost any cam you want. If you aren't afraid of doing some port work, I'd bet you could clean them up with minimal work. That motor will make over 500HP easily with the VVT Titan 2. (.227/.235, .618/.618).