Grind the piston skirt to completly clear the intake port
Stock Carb / 56 jet
Stock air box with the snorkle hoged out
Technigas next shortened by about four inches and bigger header.
Side gapped spark plug
I weigh 220lbs and I'm getting 42-43 on the flats, 44-45 in aero tuck.
15K on this engine, and 8,000 miles on this set up with no mechanical issues