nace0088

I've looked at these headers at Corksport.The Auto Exec appears to be made differently.The first pipe goes directly to the final port.The Feed and Re-Amemiya seem to share the same concept with the first pipe going to the first port.My observation may be wrong as well but can one of the heavy hitters on this forum explain this(Rotary God,Gomez or anyone else)?Which design would yield the best results?