Improved Handling

Really? Because the offset camber bolts from Moog only offer about 1 to 1.5 degrees of offset. My search at rock auto turned up an ac delco part # for an offset camber bolt that offers a bit more,maybe 2.5?.

How is the 3-4 degree's achieved?

Here are the part #'s I came up with at rock auto;

K7036 the moog cam and bushing kit or K8243A if you want just the bolts

K408 is the bushings

45K18013 is the AC Delco # for the cam bolt.

You don't install them per the instuctions. And many car can get 1 deg positive and more just stock. Depends on the car and the skill and effort of the alignment tech.