Wow, that single carb conversion is really something... I'd stick to individual carbs myself for performance purposes though.
WG brought up an interesting extension of the idea though, to essentially create a homemade RAM air system to force a little more air into those carbs when your getting on the throttle. In response to KZCSI, I believe the only real advantage over the stock airbox would be the possibility of better breathing from the carbs; or if you put a RAM type setup on... considerably more?
A possible drawback, though, if I chose to make it sit under the seat (non-RAM) would be the chance that a wide pipe "slows" the air in the intake charge too much, which would not be good for CV carbs which rely on that fast air moving through to keep the intake charge well mixed.
This has got me really intruigued about the performance gains of using a RAM style intake/manifold.
Hmm, I just need to find out the shortest way to route the filter to the runners and to keep the runners as close to equal in length as I can...
Home made RAM? Can it be done?
We will see...