6 pack, or 4bbl?

Tuning a six pack set up is a little harder since the secondary sides of the carbs are metering plates that do not have the precise incriments of jets. There was just a new gizmo put out to run jets in the out board carbs. I can not remember who made it though. There is also a kit to swap out the base plate for the center carb that makes turning the trim screws easier. They angled the trims screws outwards.

Otherwise, the 6pack will tune like any other carb out there.

Now a 4bbl or a 6 pack attack is you choice.
The power differance is nominal..