if you run 3, you could go the progressive route, like you said, and have the 2 outside carbs as secondairies. this gives you performance when you step on it, but keeps the stock-ability when you're just cruising on the middle main carb.
also will help keep the mpg's down.
personally, i like 3. the more the better. :p .
.later days.
.desperado.
.sam.
1969 K20 , with a '67 front clip. fleetside. 292, 3x1 offy, headers. sm465 4spd. getting put back together, almost ready for paint.
doing it all myself.
19 and lovin' it.
"proper" is so over-rated.
.later days.
.sam.