What parts would the ultimate blown Gas Hemi motor be based on?

I am thinking of building a blown Gas Hemi based on the 426 hemi style motor. What in your opinion would be the best parts, or combination of parts, that would suit a Gas motor? Heads for example, would it be better to go with a large cc head or a Brad type head? etc. Motor size would be around 500-525 cubic inch. Thanks for any help.

 

I would think you would need a water head like Stage V Hansens, seems like heat buildup in a billet head would bring on too much detonation. Compression would need to be in the 9 to 9.5 range so at 526 inches you wouldn't need a huge dome, even with 170cc heads. You would probably need a bottom end comparable to an alky setup, know there are (were) some slight differences in cam centerlines between gas and alky, at least in drag-boats, which was the last place I saw a blown gas Hemi, 15 years ago. One thing I do know, your tuning window on gas is about 25% as wide as an alky setup.

 

All of the above, and if you want it to live ,don't use a teflon stripped blower.