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Let me add here that if I bought an assembled set of heads from someone, I would disassemble them when they arrived, to deburr and measure all parts, then re-assemble. Like I said earlier, I trust...

If I were building a motor today, I would use Pro-Filer 185's on a 355 or 195's on a 383. They will flow nearly as well as Airflow Research heads (best in the world in my opinion), but cost $500 less...

Glenn, I don't know about you, but I would never buy an assembled motor from anyone else because I've been lied to and shafted one too many times over the course of my life. I have a need to measure...