The Mission Select mod sounds like it'll work--thanks! (Since you like the walk-through, you might take a look at it--I just updated the non-screenshot links so it's looking more the way it's supposed to.)
Edit: it worked until "Mike Toreno." I'd get Toreno and T-Bone out of the airport and to the red marker in the road, but the yellow dot on the radar would remain there though the red marker there disappeared. I used the mission chooser and did "Outrider," but the save cassette wouldn't appear afterward--so I chose "Snail Trail" and the save cassette wouldn't appear after it, either.