Hukshawn, here is link to my post with a bit more info. I could probably shoot out a PDF drawing too (or can these be posted?) but most of the dimensions will be lathe specific.
http://www.hobby-machinist.com/threads/not-another-a-lathe-stop-post.53425/#post-444842
http://www.hobby-machinist.com/threads/not-another-a-lathe-stop-post.53425/#post-444842