I'm in agreement with you that they were originally to fit on a Bonneville.
I did have to shoe horn these in delicately.
They are higher and longer.
Higher makes a more straight in shot for the fuel to reach it's destination.
Longer? I believe length adds earlier torque increases.
Tweaking the angle would need to be done by a machinist cause of the O-ring groove you would be removing to change the angle would have to be milled in again.
Length would be easier but ya still have to have the O-ring groove milled back in.
