You're comparing apples to oranges as expected. I'm talking factory-stock heads as a benchmark. The prices you mentioned are purely based on the builder, their build plan and their parts sources. Building a poly is all about making something perform what was never meant as a performance engine. I have the same amount of $ in my Poly block and heads as most would have in their LA block and heads. No "drilling down" needed.
'63 Dodge 330 11.19 @ 121 mph Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs. 10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.
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