The same bolt pattern - 6 on 6" was used on most Ford tractors all the way in to the 1990s.
Find a set of front rims from like a 5000 which will be much wider and put some used pickup tires on it.
You can also just buy some new rims.
These are some 14" I bought a few years ago to put on the front of my mowing tractor.
I run shorty rims and cheesey little car tires to get the nose down lower. You can buy them new in 14, 15 and 16" in various widths.