[blykins]

$3000 for a complete set of CHI heads? I'm seeing $2250.

You can buy bare heads for $1550.

Even if they were a couple hundred dollars more than the AFD's, the flow numbers would be worth it. The AFD heads will not touch the CHI heads in low, mid, and high lift numbers. The CHI 3V port is the key....lots of flow with a small port volume. The AFD 4V heads might come close in high lift, but there again, you're comparing 235cc heads to 208-225cc heads.