What we could use is a stock looking aftermarket block made of the same grade of iron as the RAIV and V blocks. No need to have iron like a IA2 has. Solid lifter galley like a sbc with 1/8" more materiel around the lifter bores and the extra rib along the pan rail like the 59-60 blocks. Siamesed bores too. With splayed ductile iron main caps like Milodon sells.
That ought to do it.
Bet you could make 1000 NA HP with a block like that and still look OEM.
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