Neil--looking at Jet's web site, the 1015, 1014 and 1220 models all show as having a Morris #2 taper in both head and tail stocks. If there's any doubt, Little Machine has a table on taper sizes https://littlemachineshop.com/reference/tapers.php . The large end of a #2 is .700" and the large end of the #1 is .475".
Hope this helps.
earl
