NEED PAIR of SBP (5x4) 14" wheels 6-8" Wide. Cheap and ugly is fine!
Wheel adapters that go from 4" to 4 1/2" are available. There are used ones floating around and some company has the new billett aluminum also. I am thinking it is Summit.
Here is a set of the early style that is on eBay right now but the billett is a much stronger product from what has been posted.
NOTE...THESE ADAPT TO 5" ON 5" and this is just a sample picture.
http://www.ebay.com/itm/WHEEL-ADAPT...Parts_Accessories&hash=item4d0b3e06a6&vxp=mtr