No, the best idea is building an improved aluminum slanty head from scratch, and again there is no consensus on what it should be. If You design a cross-flow type head, the
market will be tiny, and it would be foolish not to go 4-valve at that point. Or, more practical, design an improved version that will accept std. manifolding, flow better, have
an improved chamber, and of course weigh a good 30+ pounds less. I am working on ideas that would permit flexibility between stock apps & very hi output projects, but
ideas are a long, long way from reality. Time,$$$,R&D,& collaboration are all needed for anything to get close to happening. Lately I haven't haven't had much of any of these!