There were several teams that fielded crossflow headed Ford 300 sixes. While they may not be as familiar to some as the earlier Wayne or Duggan heads for GM sixes they were and are still a dominant force in the drag racing classes that allowed the use of hybrid heads, specifically Competition Eliminator altereds and the Gas Coupe and Sedan Classes for sixes.
Some teams that immediately come to mind that used crossflow heads on their cars (and in some cases, still are using them) include:
Ambrose, Argenta, and Huettman
Bob Andrews
David Majors
Peto and Mudge
Bruce Sizemore
Sherm Sligh
Lou Olenyk
Joe Williamson
Marv Wiegand
and me.
Can anybody add to my list?