O'Reilly's has the Delco U305 in the same group as the Master Pro 2-4211 (my post). It was listed as not available. The rotor used with this cap is Delco U403, also listed as not available.
This is the rotor in that group that is available.
http://www.oreillyauto.com/site/c/de...+cap+%26+rotor
And Delco U110 was in this group (not available) but this is:
http://www.oreillyauto.com/site/c/de...%26+condensers