For the 1 cent value of 2c I would be thinking on a different line. (well semi different)

I would personally fit the stacks, a good set of stacks makes a big difference at top end when jetted up to accommodate it.

I would look at making a large airbox under that seat of yours. As large as you can, have the velocity stacks fitted into that. The achieved effect will be the air has a larger area to draw from which isn't being affected by the draft which surrounds it. Otherwise with with just the stacks in open air, the faster you go... the smaller area (which is not effected by the draft) that the carb can draw from.

Alternately have a stack fitted inside a HUGE air filter for each carb.



(Display name changed for cyber security reasons)