I have Shankle 7L cams for In/Ex on my '74 2.0
They are nice down low in traffic and also give the car extra wind up high. Shankle is around no longer but you should be able to find a used pair or see if Alfa Ricambi has a set, as they bought Shankle's stock. Should be relatively inexpensive too.
"Maybe one day I'll put the bumpers back on..."