Tech, I cannot understand you. And that statement us totally unnecessary. I am from the old school when hotrodding meant figuring out what worked, not thowing dollars at it to make it work. You seem to doubt anyone who does not use modern parts.
If I do not know what I speak of, how was it that we got just as good times or some times better than the so called modern engines? Check your history. If you want to use the aftermarket heads, do so with my blessing, but do not tell someone who has stated that cost is a factor to also spend the bucks, OK?