7.25" differential, 9 bolt - need spider gears

I just got off the phone with a local parts supplier, and he informed me that the 7.25" 9 bolt spider gears are different than the 10 bolt. Can anybody verify this? Also, is there any chance somebody has some that they're willing to sell/trade? I do embroidery for a living, and could make you some really cool stuff, if you're interested.

Thanks,
Beard