Maybe that's a reason for the Italians fascination with wheeled tank gun carriers.
Also they would have had to persuade Yugoslavia to let them through to get to the nice tank terrain (which I think is also a bit swampy?) from Turin to Trieste. Not very likely as they weren't in the warsaw pact and making good money with western tourists. Not to forget the century old ties of Slovenians and Croatians with Italy. E.g 15% of slovenians speak italian as second language.
I say the WP troops would have faced severe difficulties in getting through.
Air Force wise the starfighter would have had severe difficulties against more agile WP crafts but lets not forget that the bulk of WPs a/c would have been MiG 21s. So if the SF just used the room over the adriatic to lauch missiles it would not be totally useless. It should also have been of a somewhat worth against the fast WPs bombers as it was intended by design to intercept them.
The Gina should have done her job quite sufficiently effective.
I think they left the adraitic side deliberately free of airbases prolonging the distance the attacker has to travel and giving more time for interception.