Hey Matt,
I replaced all of my bearings on the 87 also. I went to a local (very large) bearing supply warehouse. They did not have any of the bearings. They said that those bearings were not a standard size bearing. They were made specifically for Honda. This is what they said. He had some that were the same deminsionon the inside (where the axle goes thru), but then the outside would be too small or too big.
ClayW
Clay Whitman
Newnan, GA
AMSOIL DEALER
My Toys
2008 Yamaha Rhino 700 SE
1999 Larson 226 SEI 5.0L EFIVolvo I/O LOVE IT