Neocons are militaristic, nationalistic and pro-american foreign policy dominance while Paleocons stress small government, xenophobia and isolationism. Not really seeing links between paleocons/fascists.
Neither are fascists as I said in my previous post. However, I'd argue paleocons are much closer to fascism than neocons. The neoconservative position stresses an aggressive foreign policy not for conquest but to spread democracy. No neocon I know has ever favored Manifest Destiny-type imperalism (annexation of other nations).
Paleocons, on the other hand, share with fascists an extreme nativism which includes hatred of other races (in the paleocon's case, blacks and Jews). Belief in the supremacy of their race or countrymen is a core belief shared by both fascists and paleocons. Both are also very suspcious of free market capitalism when it doesn't fit their nationalistic ideas. Neocons are strong supporters of capitalism.
And remember it is paleocons like Buchanan who go around meeting with actual fascists and neo-Nazis. He was on "The Political Cesspool" to promote his latest book, a radio show whose stated mission is to "represent a philosophy that is pro-White". He is also sympathetic with several members of the European far-right, such as Filip Dewinter of Vlaams Belang.