Looking for LuberSizer dies

Teach

I need a .311" or .312" die to fit a Lyman LuberSizer, and top punch(es) to fit a Spitzer-style bullet. I can make the top punch on the lathe if necessary, but it's a big hassle to make and heat-treat the sizing die. RCBS sizing dies also fit the Lyman press, I believe.
Thanks!
Jerry