It looks like the base circle on the Stage II cams is slightly smaller than on the stock cams. They will require shims to the large side (2.80-3.00mm) of the spectrum available from Harley Davidson.
If you don't have a set of shims available to you, then you'll need to plan a couple days of down time while the shims you need are delivered.
If you do have a complete shim kit, you're good to go.
(There aren't any "kits" per se available from Harley Davidson. You'll have to order the ones you want. )