vf96

I'm in the research stage for my winter project. I'm doing a total engine build. Starting with a bare 5.4L Cast Iron Block all the way up.Looking for 4valve heads. Would love to get my hands on some Cobra R heads but it looks almost impossible.Any ideas?? I fully expect 800+ hp. As soon as my block gets here it's going to get magnafluxed. Don't expect to start in earnest until Nov.