It is true, that is who originaly started Afr, not directly, Rick Sperling, who owned Air flow Reasearch, mainly a head porting shop way back, bought out Brownfield, the equiptment, etc, then re-named the AFR, then over the years adapted to the markets, and continued improving them etc. So, with that said, the heads you have will work. They are old though. Been around a long time
Frank
Advanced Performance
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