One last thought, look at what similarities exist between the 216-235-261 heads and the 194-230-250-292 head! Many people might look at a side to side comparison, and see that they both have a siamese port configuration and say that perhaps the later L6 head evolved from the earlier 235. The newer L6 having an improved port design and other modern changes applied to it. Look at how much the "Lump Port" technology has raised the bar for the 250/292.......could "Lump Port" practices be applied to the 235 as well? I will explore that also. I bet it will!
