I've got piles of 1-1/8" threaded 26" forks. They all came off mountain bikes though, much larger fork blades and no rack mounts, also very unlikely to find a steerer that long. I do have one beat up straight blade fork off a Nishiki that was huge, even that would probably barely be long enough.

You can find decent Tange forks in 1-1/8" threaded on ebay, they look exactly like that Sunlite but are actually cromoly not hi-ten. Best riding fork I've ever used was a Tange replacement fork on my old townie bike. No idea of the trail measurement, but they definitely made a non suspension corrected version that wouldn't mess up the fork length too bad.