Found it! Here is the website for those 12-port crossflow inline 6 heads:
http://www.waynemfgco.com/frame.html Not cheap though.
$3350 for fully assembled aluminum head w/ss valves (2.125"/1.7")
$1395 for shaft rocker arm system (but looks like you can use original)
$150 for rocker arm assy stud kit
$400 for aluminum manifold ...or...
$1485 for EFI manifold with everything included
Depending on what you want, could end up being a 5 grand upgrade.
I've got an e-mail to them asking about compatibility with turbocharging because there is essentially NO combustion chamber. So if you use flat top pistons, you'll have a heck of a lot of compression!!! They might sell dished pistons, and I'll report back when they answer me.
