Dave,

I don't have a real lot of experience with Webber carbs, but I would be
surprised if the carburators give you any better emissions than Digijet. The
Digijet (when the temp & oxy sensors are working!) has so much better control
over what goes into the cylinders than carburetors, which work kind of "open
loop" without much feedback.

(Of course, if PA emissions inspection is like MA, then you can "tweak" the
carbs so they produce minimum emissions at idle during the test, but you then
have no idea/control over what they do during actual operating condiotions on
the road...)

Erik Valeur