yes as usual you tend to get what you pay for,
and I don,t see these as a great performance cylinder head,
but it might be a decent lower cost upgrade if your existing stock heads need to be replaced vs
paying a machine shop for refurbished stock heads,
as just the larger ports and valves and aluminum casting, and more modern combustion chamber design, have obvious benefits.
I would certainly see these as a better option,
than throwing cash down a rat hole in rebuilding most 30-70 year old cast iron OEM stock small block heads on a daily driver
https://www.qcylinderheads.com/
and I don,t see these as a great performance cylinder head,
but it might be a decent lower cost upgrade if your existing stock heads need to be replaced vs
paying a machine shop for refurbished stock heads,
as just the larger ports and valves and aluminum casting, and more modern combustion chamber design, have obvious benefits.
I would certainly see these as a better option,
than throwing cash down a rat hole in rebuilding most 30-70 year old cast iron OEM stock small block heads on a daily driver
https://www.qcylinderheads.com/
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