I pulled up pictures of your 2008 Viking Epic 1706 and found that it uses a side mount trailer jack. So since it is welded on you could use a Pro Series swivel jack part # PSEJ10000101 mounted on the other side since this would bolt on with included u-bolts. Or if you wanted to try and mount a new jack to your current mount I would need to know what brand and model jack you have now. view full answer...
The outer diameter of the hub bore (shaft) portion of the Dexter Trailer Idler Hub Assembly part # 8-258-5UC1-EZ is 1.986" outer diameter so your wheels will have no issues clearing it.
The hub flange diameter is 6-1/2" which allows you to use 13" to 15" wheels on the hub. view full answer...