Not all S-covers have anti-surge ports. My old 6776 didn't have any. e-cover has the "bumps" in the castings, and is a 2" outlet, s covers are 4" in, 2.5" out, and h covers are 4" in, 3" out.
Good luck with Sale chad, I can vouch this turbo has NO shaft play, and pulls hard as hell on his car.
Hughes, the post was in cleaning up confusion for the seller. Before you ban me, read, and either delete the posts above, or leave it be.