Ben,
Sounds like you researched the poly bushing thing –but- I suggest you drive someone's car that has them. My track car (69 gtv) has yellow Konis, yellow springs (don't know mfg), bigger sway bars, and most recently, poly bushings.
On the track, the overall vibrations increased so much with poly, I went back to the pits because I was sure something broke. Now I'm used to it and the car is significantly faster through the turns with the poly bushings.
That said, I will never use them on a street Alfa. Go with the red Konis, all new rubber bushings, and whatever springs & sway bars you like. But beware the vibrations of poly!
Oh yea, just my opinion
