I don't think anyone is making fun of this project, but are just giving our thoughts on how to proceed if we had the $$. I bet all of us has fantasized on what our ultimate engine would be.
So to continue - If money is no object, why not a custom block to incorporate the pushrod cover, etc? The 292 Chevy block has already been made in billet by LSM Engineering:
http://www.lsmeng.com/Billet-Blocks2.html And/or LSM can design the valvetrain and rocker arms too:
Capability
At LSM we have the expertise needed to make camshafts and
valvetrain systems work. We utilize internally developed advanced
computer modeling software to analyze valvetrain motion that can
handle your application from standard pushrod to desmodromic
applications. LSM has the answer to your camshaft needs whether
you need the latest big bearing camshaft, or want to experiment with
profiles or firing orders.
