pro gears for 8.75 489 housing

They are pro street ring and pinions, I called the today to find who made the PRO Comp ring and pinion and nobody makes them, unless some has a lead on some laying on a shelf. I called Mancini Racing, Moser Engineering, even checked Yukon Gears and Richmond Gear which I think was bought out by Motive Gear. They don't even make a 4.30 for a Dana 60 anymore from what Moser salesman told me.