I’ll make a feeble attempt to redeem a little something out of it. I’ve asked before but wow, it was a ways back… If you were limited to iron heads on a .30 over 318, (less than optimal, I know!) what would you choose… 913? 234 industrial? 360 heads? Longer Chevy valves, 5/16 stems, what valve sizes? Haul the whole mess off for scrap and hope money starts raining out of the sky to buy a real set of heads with?