Horizon/Omni wheel specs?

[QwikSRT4]

I bought a set of 15" Honda wheels (Fat Fives) to install on my 84 Horizon. I figured the offset would be fine and I knew the bolt pattern was the same. Well, the hub on the Honda wheels is just barely smaller than the Horizon's. What is the offset and the hub bore size of stock Omni/Horizon wheels?

Anyone have any idea what stock 14" or 15" wheels from other vehicles will fit Omnis/Horizons?

Thanks.

[detobias]

I wouldnt worry about opening that hub up with a die grinder ... 5 minutes