[Excaliber]

C3, 1963, stick a fork in it, your done!
C4, 1964, see above.

"F" is the high rise head, not "K". Besides, high riser wasn't out in 1963 (I'm pretty sure). The INTAKE may in fact be a High Riser, but it won't match the port sizing on the heads, kind of a waste without matching ports.

High riser HEADS had the largest ports/valves of the basic 3 head styles, low, medium, high. High rise does not interchange well with other parts (block, intake, etc). The cylinder hole has a 'notch' for valve clearance which is a MUST if your running high rise heads. Tunnel port and beyond are even more rare.