The GOP didn't co-opt the Teabillies and Fox News. Those extremists co-opted the GOP. A growing number of the people you described are closer to the new (moved to the right) Democratic Party than the new (moved extremely to the right) GOP.
Philosophically speaking, the Eisenhower Republicans are the right fringe of the Democratic Party. The old Democrats of the South (Dixiecrats) have fully embraced the GOP.
Constant political evolution makes comparison to the past difficult. I see the GOP in it's current state, as a wilde beast in the jaws of a lion. Kicking, struggling, and doomed. They must adapt or die. The 1% are really going to hate the direction they must go to politically survive. Americans will simply not tolerate oppressive plutocracy. Perhaps limited plutocracy, but not oppressive plutocracy.