I have an older, high compression .80GK...a 1.00...and a 1.80

The .80 has been modified some...
I cleaned up the ports...which is a fun and challenging thing to do reaching in thru the bottom of the cyl. w/ a Dremel carbide, w/o nicking the valve seats...(being able to hold your breath for extended periods helps there)
I also made a "custom" header out of mild steel automotive gas line and had a buddy chrome plate it for me