Need Help Tracking Down Pistons For Low Compression 408 Stroker

Reviving this thread as I'm diving back into this engine build.

Turns out the block will need bored after all, which opens up piston options a bit more, but I've got another problem, which is that I think I've been operating with the wrong assumptions in terms of what I can get away with regarding cranking compression.

I've been operating on the assumption that ~180psi is going to be workable on 87 octane with good quench, but it looks like I have been wrong about that. David Vizard says one should be able to get away with 165psi on a tight quench motor with 87.

Unfortunately that presents some real problems. If I want to preserve the .039 quench, and I run the largest dish hyper piston I can find (25cc KB416), that gets me down to 9.04:1 static compression. Sounds great right? Well, I would need a camshaft that closes the intake valve 60* ABDC to get the cranking pressure down to 164psi. That's something in the 252 duration range! That strikes me as a terrible idea for a daily driven pickup truck.

The largest dish I can find at all is 34cc (Icon 9977), but it's 2618 forged which require a lot of piston to wall clearance and will significantly reduce service life, which is important in this application.

Does anyone know of a larger dish cast, hyper, or 4032 forged piston?