Some insight on my build

So this is a strip only build, my 410 stroker with ootb eddy heads ran 12.47 with and airgap and 825 mighty demon. Through the 340 exhaust manifolds. Serious small block efforts need all the cylinder
Head you can get. You already have the eddy heads they don’t flow much ootb. You should either have them ported or sell and start with a better head as a starting point. HP no way to tell at this point.