That's a edelbrock quicksilver 40mm carb.
That and a stock airbox with a K&N drop in will get you from 70 to 95 in a third of the distance a stock carb will get you 85.
After that the limitations of the stock petcock play in.
I was quite surprised that I was running even with MMR on mpg last year at the dragon. She really likes eastern gas over western barfenated stuff.
Quote:if I had a parts list and written instruction
It's like cooking, a pinch of this and a smidgen of that.
The seat of the pants says its right or the ear says change that.